OPINION OF THE COURT
This appeal involves an interpretation of U.S.S.G. § 3C1.1. A jury convicted Robert Jenkins for unlawfully possessing firearm ammunition. The District Court increased Jenkins’s offense level by two levels under U.S.S.G. § 3C1.1 for obstructing justice by failing to appear at a state court hearing. Jenkins challenges the sentence enhancement only. For reasons that follow, we will reverse and remand for resentencing.
I.
On October 29, 1996, following a complaint from a local store owner, Philadelphia police officers arrested Robert Jenkins. He was charged with retail theft and possession of a firearm without a license, both violations of Pennsylvania law, and ordered to appear in state court on those charges. On three separate occasions — November 6, 1996; March 19, 1997; and March 4, 1999 — Jenkins failed to appear. On March 3, 1999, the day before Jenkins’s third failed appearance, an assistant United States attorney began preparing a federal complaint against him. On May 18, 1999, federal prosecutors indicted Jenkins for illegally possessing firearm ammunition, a violation of 18 U.S.C. *286 § 922(g)(1). Jenkins was arrested by federal officials on September 15,1999.
As part of a plea agreement, Jenkins pled guilty in federal court to being a felon in possession of ammunition, a violation of 18 U.S.C. § 922(g)(1). Finding “obstruction of justice” under U.S.S.G. § 3C1.1, the District Court added a two-level enhancement for Jenkins’s failure to appear in state court. Three levels were subtracted for acceptance of responsibility. With a total offense level of 19, Jenkins’s guideline range was forty-six to fifty-seven months. He was sentenced to fifty-four months in prison, three years of supervised release, and a special assessment of $100. Without the two-level enhancement, Jenkins’s offense level would have been 17, and he would have faced a guideline range of thirty-seven to forty-six months.
In his initial appeal, Jenkins challenged the District Court’s imposition of the two-level upward adjustment. The government filed a consent motion for remand, which we granted. After an evidentiary hearing, the District Court found: (1) the federal investigation of Jenkins commenced on March 3, 1999; and (2) Jenkins was unaware of the federal investigation on that date. Nevertheless, the District Court determined Jenkins’s awareness of the state proceedings provided sufficient grounds for applying the two-level enhancement. The District Court confirmed its prior sentence, including the obstruction enhancement. This appeal followed.
II.
Our review of the District Court’s interpretation and application of the Sentencing Guidelines is plenary.
United States v. Figueroa,
III.
United States Sentencing Guideline § 3C1.1, entitled “Obstructing or Impeding the Administration of Justice,” provides:
If (A) the defendant willfully obstructed or impeded, or attempted to obstruct or impede, the administration of justice during the course of the investigation, prosecution, or sentencing of the instant offense of conviction, and (B) the obstructive conduct related to (i) the defendant’s offense of conviction and any related conduct; or (ii) a closely related offense, increase the offense level by 2 levels.
Interpreting a pre-1998 version of § 3C1.1, the Supreme Court held the guideline requires sentencing courts to “review the evidence and make independent findings necessary to establish a willful impediment to or obstruction of justice, or an attempt to do the same.”
United States v. Dunnigan,
Jenkins concedes his “obstructive” conduct — the failure to appear in state court — occurred after the federal investigation against him began, satisfying the temporal aspect of the enhancement. But Jenkins contends he was incapable of “willfully” obstructing justice because he was unaware of the federal investigation on March 4,1999. 2
The threshold issue is whether the inclusion of the word “willfully” in U.S.S.G. § 3C1.1 requires the government to prove Jenkins was aware of the federal investigation. We have plenary review over this question of law. 3 In this case, the term “willfully” must be considered in context, with reference to the other words in U.S.S.G. § 3C1.1.
We interpret United States Sentencing Guidelines the same way we interpret statutes, “using the terms’ meaning in ordinary usage.”
United States v. Loney,
In view of the language, structure, and context of U.S.S.G. § 3C1.1, we believe the ordinary meaning of “willfully” is “deliberately or intentionally”; in other words, not “negligently, inadvertently, or accidentally.” Jenkins does not dispute that his failure to appear in state court was an intentional action, one taken with full awareness of the proceedings. 4 On this threshold issue, Jenkins’s conduct represented a “willful obstruction.”
Jenkins contends the guideline requires an awareness on his part that a federal investigation had begun. The term “awareness” does not appear in U.S.S.G. § 3C1.1. Nor do we believe that it can be properly implied. Incorporating such a requirement would contravene the purpose of the 1998 amendment to the guideline. As the Sentencing Commission explained, the amendment clarified “what the term ‘instant offense’ means in the obstruction of justice guideline.” U.S.S.G. app. C,
*288
amend. 581.
5
At the time of the amendment, several courts of appeals had affirmed sentencing enhancements based on the obstruction of state proceedings.
E.g., United States v. Self,
Jenkins observes that three of our sister circuits have said in this context, “willfully” must imply some level of awareness by the defendant of the federal investigation. In
United States v. Brown,
However, the term [“willfully”] generally connotes some kind of deliberate or intentional conduct. Logically, [the defendant’s] actions cannot have been willful unless he had some idea that he was being investigated.
Otherwise, the adjustment would serve no deterrent purpose.
See also United States v. Lister,
In contrast, the Court of Appeals for the Seventh Circuit has held awareness is not a prerequisite for imposing the obstruction-of-justice requirement. In
United States v. Snyder,
Jenkins contends such a conclusion depends on the fortuity of initiating an investigation the day before his unrelated appearance in state court. But this type of “line drawing” is common in the law. Statutes of limitations and other time-bar rules impose legal consequences based on specific timing. Because a federal investigation against Jenkins could have begun two days later does not change the fact that the investigation, commenced before Jenkins’s “obstructive” conduct, met the textual requirements of U.S.S.G. § 3C1.1. 7
IV.
That does not, however, end our inquiry. Federal proceedings here were initiated almost three years after related state proceedings began. Jenkins admits he was aware of the state proceedings pending against him in Pennsylvania, consciously failing to appear for hearings on three separate dates. But Jenkins’s failure to appear in state court before his federal indictment had no effect whatsoever on the later federal proceedings. The government presented no evidence the federal investigation against Jenkins, initiated on March 3, 1999, was obstructed or impeded by his failure to appear in state court the next day. The federal indictment was apparently issued when it was prepared, without any delay engendered by Jenkins’s failure to appear in state court. We exercise plenary review over the application of U.S.S.G. § 3C1.1 in these circumstances.
The government contends Jenkins’s absence from the state court proceeding is relevant for sentencing purposes because it indicates his overall culpability. But U.S.S.G. § 3C1.1 is not an invitation to consider every instance in which a defendant acted in a blameworthy fashion. Only conduct obstructing the “instant offense of conviction” is relevant to sentencing.
See United States v. Luca,
The Court of Appeals for the Ninth Circuit has said the governing standard is the “effect of the obstructive conduct rather than the level of law enforcement that was obstructed.” Id. We agree. The application notes to U.S.S.G. § 3C1.1 *290 observe that some forms of obstructive conduct — including fleeing from arrest, providing incomplete or misleading information during a presentence investigation, and making false statements while not under oath — do not merit the enhancement. U.S.S.G. § 3C1.1 app. n. 5. In contrast, where such conduct “significantly obstructs] or impede[s] the official investigation or prosecution of the instant offense,” a sentence is properly increased. Id. app. n. 4(e).
Prior cases have affirmed sentence enhancements based on conduct involving state court proceedings that obstructed the federal investigation, prosecution, or sentencing of the defendant. In
United States v. Imenec,
Based on the text and purpose of § 3C1.1, we conclude that the Sentencing Commission’s intent was to impose an enhancement for any conduct that obstructs an investigation, prosecution, or sentencing proceeding that is based on the criminal conduct underlying the specific statutory offense for which the defendant is being sentenced. Section 3C1.1 imposes a sanction for conduct that obstructs a criminal investigation, even though the investigation has not matured into a prosecution and indeed, even though no thought has yet been given to what the appropriate criminal charge might be.
Id.
But where the obstructive conduct relates only to an ongoing state prosecution, with no diseernable effect on the federal proceedings, enhancement under U.S.S.G. § 3C1.1 is improper.
Cf. United States v. Perez,
In
United States v. Roberts,
[The defendant] was still on the run when federal charges were filed against him. The fact that he was on the run rather than in the custody of the state would have made it much more difficult for federal authorities to prosecute [him].... [The defendant’s] obstructive conduct — escape—did have an effect on the federal prosecution.
Id. We believe Roberts is distinguishable on its facts. As stated, Jenkins failed to appear in state court on March 4, 1999. The sealed federal indictment was not issued until March 18, 1999. While the assistant United States attorney began preparing the indictment on March 3, 1999, there is no claim that Jenkins’s absence from state court the next day compromised the federal investigation in any way. *291 Therefore, unlike in Roberts, Jenkins is not more “culpable” for federal sentencing purposes because of his conduct before the state tribunal. The two-level enhancement for obstruction of justice was improper.
y.
Despite several amendments, U.S.S.G. § 3C1.1 is no model of clarity. In its current construction, we find the defendant need not be aware of the federal investigation at the time of the obstructive conduct. But the obstructive conduct cannot merely affect some global application of “the administration of justice.” The federal proceedings must be obstructed or impeded by the defendant’s conduct. In other words, there must be a nexus between the defendant’s conduct and the investigation, prosecution, or sentencing of the federal offense. Jenkins’s failure to appear in state court on March 4, 1999 did not obstruct the federal proceedings initiated against him the previous day.
Imposing a two-level enhancement for this conduct would neither deter future defendants from acting similarly nor serve the ends of justice in this case.
VI.
For these reasons, we will reverse the finding of the District Court imposing a two-level enhancement for obstruction of justice under U.S.S.G. § 3C1.1 and remand for resentencing.
Notes
. The examples set forth in the commentary to U.S.S.G. § 3C1.1 are not exhaustive. See id. app. n. 3 ("Obstructive conduct can vary widely in nature, degree of planning, and seriousness.... Although the conduct to which this adjustment applies is not subject to precise definition, comparison of the examples set forth in Application Notes 4 and 5 should assist the court in determining whether application of this adjustment is warranted in a particular case.”).
. Jenkins also challenges the constitutionality of 18 U.S.C. § 922(g)(1), which formed the basis for his conviction. We recently upheld the statute under a similar challenge.
United States v. Singletary,
. It would appear that '‘willfully” is a term with "no fixed meaning.”
Smith v. Wade,
.Jenkins does not claim that his failure to appear resulted from negligence, for example, like forgetting the date of the hearing.
. The Commission amended the language in response to inter-circuit disagreement whether sentencing courts could impose the enhancement for conduct in cases closely related to the federal offenses of conviction. Subsection (B) now indicates the obstruction “must relate either to the defendant's offense of conviction (including any relevant conduct) or to a closely related case.” Id.
. In
Schmidt,
the Court of Appeals for the Seventh Circuit noted in dicta, “Even if we were to reach the merits of the [defendants'] appeal, we would affirm the sentences imposed. First, the district court's enhancement of the [defendants'] sentences under U.S.S.G. § 3C1.1 for willful obstruction of justice was proper, despite the fact that the defendants’ actions — removing water sampling probes from planting lines — occurred before they knew they were under investigation.”
Section 3C1.1 indicates that the obstruction of justice enhancement does not apply to any and all obstructive conduct that a defendant may have committed, but instead applies only to willful attempts "to obstruct or impede the administration of justice dur *289 ing the investigation, prosecution, or sentencing of the instant offense.” U.S.S.G. § 3C1.1. In other words, section 3C1.1 does not contemplate enhancements for obstruction of justice if the relevant conduct impedes the investigation or prosecution of a separate crime.
Id. The Polland court construed the pre 1998 language "instant offense” to mean "instant offense of conviction,” a change formalized in the 1998 amendments. Id. Construing the commentary accompanying the guideline, the court said, "[T]he commentary clarifies that the significant factor is not merely the timing of the obstruction but rather whether the obstruction or attempt involves evidence that is material to the investigation or prosecution of the instant offense of conviction.” Id.
. Judge Becker does not join in Part III because he believes that the correct interpretation of U.S.S.G. § 3C1.1 is stated in
United States v. Brown,
