18 U.S.C. § 1956 is the most frequently charged money laundering statute and prohibits four types of activities. These are transactions designed to promote certain specified unlawful activity, conceal the source of unlawfully derived funds, facilitate the structuring of financial transactions to evade bank reporting requirements, and facilitate tax evasion. “Specified unlawful activity” is a term that refers to a long list of crimes delineated in 18 U.S.C. §§ 1956(c)(7) and 1961(1) and includes mail fraud, narcotics distribution, counterfeiting, bribery, obstruction of criminal investigations, and extortion.