I am a US citizen with a valid US passport, and have a long stay visa for France. I'm getting my residence card next Month, as part of my EU blue card. Is it possible to take the Paris <-> London train using my global entry ID card (or something else) and not bring my passport?
The reason I ask is that I need to renew my passport, since it expires soon-ish, and the timing of this potential trip is right in the window of when the consulate may still have it and be processing it.