Several money laundering laws do not apply until the amount of money involved exceeds $10,000. The laws include three reporting requirements and one substantive crime. Launderers have responded to these laws in part by "structuring" their transactions--breaking them up so the amound involved in each transaction is less than $10,000. This Article collects and analyzes the laws that make structuring a crime. I have discussed one such law, the cash transaction report (CTR) anti-structuring statute, in a previous article. This Article analyzes the anti-structuring provisions of the three other money laundering laws that use numerical thresholds. It also examines how the CTR anti-structuring statute is developing, both for its own sake and because it anticipates issues for the other anti-structuring laws.