Livan Alfonso Raad appeals his sixty-month sentence, imposed following his *1323 guilty plea for three counts of smuggling aliens for financial gain, in violation of 8 U.S.C. § 1324. The issue presented is whether the mandatory minimum sentence prescribed under § 1324 violates the Eighth Amendment’s prohibition against cruel and unusual punishment. 1 We hold that it does not.
Raad, indicted for sixty-seven counts relating to alien smuggling, pleaded guilty to three counts of smuggling aliens for financial gain, in violation of 8 U.S.C. § 1324. Although the district court calculated Raad’s sentencing range under the U.S. Sentencing Guidelines to be fifty-one to sixty-three months imprisonment, the court sentenced Raad to the mandatory minimum sentence of sixty months imprisonment required under the statute. 2 Raad did not challenge this mandatory minimum at sentencing. Raad now appeals, claiming that his sentence violates the Eighth Amendment because it is disproportionate, as it falls at the high end of the guidelines range. 3
When a defendant fails to object to an error before the district court, we review the argument for plain error.
United States v. Hall,
As this court has explained, “[i]n non-capital cases, the Eighth Amendment encompasses, at most, only a narrow proportionality principle.”
United States v. Reynolds,
*1324 When addressing an Eighth Amendment challenge,
a reviewing court must make a threshold determination that the sentence imposed is grossly disproportionate to the offense committed and, if it is grossly disproportionate, the court must then consider the sentences imposed on others convicted in the same jurisdiction and the sentences imposed for commission of the same crime in other jurisdictions.
Reynolds,
We have upheld mandatory minimum sentences in other statutes.
See United States v. Reynolds,
Accordingly, for the foregoing reasons, we AFFIRM.
Notes
. Raad also appeals the guidelines calculations. Because we conclude that the district court correctly imposed the statutory mandatory minimum sentence, any error in the guidelines calculations is harmless and we need not address these arguments. Additionally, there is no merit to Raad's claim that his sentence is unconstitutional in light of
United States v. Booker,
543 U.S. -,
. Under 8 U.S.C. § 1324, there is a three-year mandatory minimum sentence for the first or second violation, and a five-year mandatory minimum sentence for any further violations. 8 U.S.C. § 1324(B)(2)(B)(iii). Raad pleaded guilty to smuggling three aliens, and each alien is counted as a separate violation.
See United States v. Ortega-Torres,
. We reject the government’s assertion that Raad has waived his right to appeal. The record does not contain a copy of the written plea agreement or a transcript from the change-of-plea hearing demonstrating any waiver of appeal.
. Because Raad cannot make a threshold showing of disproportionality, we need not consider the sentences imposed on others.
See Reynolds,
