I've never had a problem going back to the states and I flagpoled my last work permit. Been to the states multiple times since. If your worried just get a visa or esta depending where your from.
Just got off the phone and she said its too early for them to see or access my envelope? But it's approved and if I don't have it by the end of next week to call back.
Another week goes by and still no word.. :-( this is really beating me down. It's been 2 weeks since they asked PPR and I posted it the next business day. Why is this process taking so long???