There are all sorts of scams people employ to use and abuse U.S. immigration law. Phony marriage is one such tactic, and it's apparently rather easy to get away with it.

A recent case in Miami involved one woman who was simultaneously married to ten men:

A 26-year-old Miami woman was married to 10 men at the same time, prosecutors allege, in a marriage-for-pay scheme to enable the men to remain in the United States. Eunice Lopez was charged with nine counts of bigamy Wednesday. The charges say she married the men between 2002 and 2006 without divorcing any of them. In one case, she married two men in the same month.

The article reporting this case includes a detailed breakdown on when she married all these guys. What's amazing, or maybe not so amazing nowadays, is that the Miami bureaucrats didn't figure out what was going on until the scam had been going on several years and she was simultaneously married to 10 men.