94 F.3d 849, 862 (4th Cir.1996). The offense of possession with the intent to distribute drugs requires that the Government prove beyond a reasonable doubt that the defendant: (1) knowingly, (2) possessed the drugs, (3) with the intent to distribute them. Id. at 873. An intent to distribute can be inferred if the amount of drugs found exceeds an amount associated with personal consumption. See United States v. Wright, 991 F.2d 1182, 1187 (4th Cir.1993). To prove that Freeman unlawfully imported cocaine under 21 U.S.C. § 952(a), the Government had to show that Freeman: (1) knowingly, (2) imported a narcotic controlled substance into the United States, (3) from any place outside of the United States. 21 U.S.C. § 952(a); United States v. Restrepo-Granda, 575 F.2d 524 (5th Cir.1978) (<HOLDING>). We find that there was sufficient evidence to
holding that knowledge that a substance is a controlled substance is an element of  952 holding that possession of a controlled substance is a crime only if the defendant knowingly possesses the substance and has knowledge of the nature of that substance holding that mens rea required for possession of a controlled substance is knowledge that defendant possessed a controlled substance recognizing that a conviction under  841a1 requires knowledge that the substance was a controlled substance but rejecting the argument that knowledge of the exact drug type or quantity is an element of the offense holding that quantity of the controlled substance does not have to be measurable to support a conviction for possession of such controlled substance particularly when the immeasurable amount of the substance is found on an implement used to consume the substance