Not necessarily there are numerous arab pilots flying the states so don't go on initial speculation and stereotyping. Most Americans are not silly nor small minded as some would have us think, there have been examples post 9/11 of US captains standing up for their brown skinned crew members against passenger revolts in waiting lounges. Also a number of middle eastern students have completed type ratings there too so I'm sure it can be done. Indeed there'll be the understandable delay in application procedures and verification but I'm sure you can understand the circumstances for such caution.
As for dartagnan, well words fail me, the guy is always negative and full of doom and gloom over any issue. He's more depressing than the weather we're having the UK at the moment.