I think the rules are the same as always...

"If you are an American citizen then you don't need a passport... birth certificate/drivers license will do. However, we may need to see a passport to be convinced that you are an American citizen".

I think we learned that one from US Immigration

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8