Western Union profiting from migrants.
http://mobile.nytimes.com/2007/11/21/business/worldbusiness/21iht-western.4.8424569.html
Last time I used Western Union I noticed that Mexico doesn’t count as a ‘foreign country’ for purposes of sending money.
Remember also the ‘multiplier effect’ of cash. If you take billions out of the U.S. economy in cash, that’s money that didn’t get spent at local restaurants, goods or services, and paid local and federal taxes.