Defendanb-Appellant Kenneth Randall Markey pleaded guilty to a one-count indictment for being a felon in possession of explosives in violation of 18 U.S.C. § 842(f)(1). As a condition to entering the plea, Mr. Markey reserved the right to appeal the District Court’s order precluding him from presenting evidence that the dynamite he possessed could not actually explode. We take jurisdiction pursuant to 28 U.S.C. § 1291 and AFFIRM.
I. BACKGROUND
In December 2002, Mr. Markey was given four sticks of dynamite by an acquaintance who had found the sticks in a commercial dumpster. Because Mr. Markey had used explosives while serving in the military, he had some knowledge of dynamite. He examined the dynamite and noticed it was manufactured in 1971 and had not been stored properly. As a result, he concluded that it could not be detonated by conventional methods. To verify his conclusion, Mr. Markey took one stick of dynamite to an uninhabited mesa northwest of Albuquerque, New Mexico, connected it to an electronic blasting cap, and attempted to detonate it. Although the blasting cap exploded, the dynamite did not. Mr. Markey left the remaining three sticks in his apartment, which were later found by the police after Mr. Markey’s brother-in-law alerted them to the situation.
The Government indicted Mr. Markey under 18 U.S.C. § 842(i)(l), which makes it unlawful for any person who has been convicted of a felony to “possess any explosive which has been shipped or transported in or affecting interstate ... commerce.” 18 U.S.C. § 842(f)(1). After Mr. Markey unsuccessfully moved to dismiss the indictment based on evidence that the dynamite was incapable of exploding, the Government filed a motion in limine seeking to preclude Mr. Markey from continuing to present such evidence, including evidence of Mr. Markey’s failed attempt to detonate the fourth stick of dynamite.
The District Court granted the Government’s motion, holding that an explosive need not explode or be capable of exploding in order to trigger § 842(f)(1). As such, the court held that evidence showing that the dynamite was incapable of exploding was not relevant, see Fed.R.Evid. 402, and its probative value was substantially outweighed by the risk that such evidence would confuse or mislead the jury, see Fed.R.Evid. 403. The District Court also held that the exclusion of this evidence did not violate Mr. Markey’s Fifth and Sixth Amendment right to present a defense.
Mr. Markey subsequently pleaded guilty to the indictment on the condition that he retain the right to appeal the District Court’s order precluding him from pre *1135 senting evidence that the dynamite he possessed could not actually explode. He now appeals that order, arguing that it violates his Fifth and Sixth Amendment right to present a defense.
II. STANDARD OF REVIEW
Generally, we review a district court’s decision to exclude evidence for abuse of discretion.
United States v. Ramone,
III. DISCUSSION
A defendant’s right to testify, present witnesses in his own defense, and to cross-examine witnesses against him— often collectively referred to as the right to present a defense — is rooted in the Sixth Amendment’s confrontation and compulsory process clauses,
see Rock v. Arkansas,
To determine what evidence is relevant, we first turn to the elements of the offense.
See, e.g., United States v. Casares-Cardenas,
A further word is required as to the second element of the statute (i.e., that the defendant
knowingly
possessed an explosive). Although the text of § 842(i)(l) does not specifically state a mens rea requirement, this silence does not indicate that Congress intended to dispense with one.
Staples v. United States,
Because Mr. Markey’s status as a felon and whether his possession of the dynamite affected interstate commerce are not contested, the sole issue is whether the Government can prove that Mr. Mar-key knowingly possessed explosives. To do so, it must prove that Mr. Markey knew the objects he possessed had the characteristics that brought them within the statutory definition of an explosive.
See Staples,
An “explosive,” for purposes of § 842(i)(l), is “any chemical compound mixture, or device, the primary or common purpose of which is to function by explosion; the term includes, but is not limited to, dynamite and other high explosives.” 18 U.S.C. § 841(d). As with all statutory interpretation, we begin by looking to the language of the statute and give the words used “their ordinary meaning.”
Plotts,
Finally, Mr. Markey argues that because he believed in good faith that the dynamite could not explode, he should be exonerated. This contention appears to be one of ignorance of the law — “I thought the law applied differently than it does.”
See United States v. Capps,
IV. CONCLUSION
Because the actual explosive capacity of any particular stick of dynamite is irrelevant to a 18 U.S.C. § 842(i)(l) violation, we AFFIRM the District Court’s exclusion of evidence regarding whether the dynamite in Mr. Markey’s possession was capable of exploding.
