Why would they not be able to ignore this? They're already beating their own country's economy with a stick. Something I think a lot of foreigners don't understand is that the US Federal Government doesn't own the US Industry, they police it.
Whats going to happen? They're going to lose like 0.25% tax revenue for the year and run out of funding for all the programs they run? OHWAIT, they're already not funding those programs.