Money Laundering — Interstate Commerce Defined is the process of concealing or disguising the source of illegally obtained money by transferring it through legitimate channels of interstate commerce. This type of money laundering is a federal crime in the United States and is punishable by a fine or imprisonment. There are two main types of Money Laundering — Interstate Commerce Defined: Structuring and Bulk Cash Smuggling. Structuring involves breaking up large transactions into small ones in order to avoid detection from law enforcement. Bulk Cash Smuggling involves physically transporting cash across state lines to avoid detection.