Western union does not need id ever if you can get in with the clerk. Swim picked up $ that required an Id that wasnt swim. Swim got the $$ anyways. All the info WU needs is only a place holder. It is not checked. Get in were you fit in...hopefully the clerk is attractive.
It depends a lot from place to place even in USA. Where I live WU is still relatively lax on ID for under $999, but I have friends in other states who say they are practically interrogated to send or receive any money with WU. For now some people in some parts of USA can get by fine with WU with no ID and smallish amounts of money, but again I am quite certain this is *not* going to be the case in the very near future. Also don't forget fake IDs are also good for PO boxes, which in all of USA you need 2 forms of ID by federal law. edit: oh just reread your post and saw that it was "if you can get in with a clerk", yeah that is true the best way to get money with WU if to have a friendly clerk in on the take.
The reporting to the IRS really scares me I didn't know they did that. Looks like I'll be going to alert pay with a prepaid cc and fake adress