You could try coinbase though they sometimes delay transfers or cancel them if price fluctuate in your benefit. bitstamp is supposedly working with US but not sure now.
I've had enough trouble with Coinbase for a while. I'm sure Charley Lee can sort them out but nothing happens overnight. I'll give them a month or two.
For what its worth, Coinbase is too famous. Had my Wells Fargo account mysteriously cancelled after my first ACHs with coinbase. The bank doesn't need to give a reason for cancels.
So I will wait until I have a Simple account set up with coinbase before I do anymore with them. Simple likes bitcoin people and businesses, unafraid and a philosophical ally.