What is the penalty for US citizens entering leaving the US on a foreign passport?
What is the penalty for US citizens entering leaving the US on a foreign passport? Thus, the penalty is the possibility of denied or delayed entry into the US, as well as the associated costs (e.g. missing connecting flights or meetings).
Can I travel while waiting for my passport?
If your passport's time is almost up, don't wait — start the renewal process now. You can't travel while your renewal application is being processed, and you need to make sure your travel documents are valid for at least six months past the dates of any planned international trips.