Majority of Trans Americans' Passports Now One-Way Tickets
A lawyer speaking under a condition of anonymity with MSNBC has stated that all transgender Americans - especially those with an X on their passport - "should exercise caution when they leave the country, as they could have challenges re-entering the United States."
They went on to say that those with an X, should the gender marker be scrubbed from the systems, can be detained by Customs and Border Protection upon re-entry until the State Department issues a "corrected" passport, and that could easily take weeks.
Though it's unclear for the moment what would happen to those who have changed their markers from "M" to "F" or vice-versa, it is possible that they could also start being detained until their passports are "corrected" if their voices and appearances aren't definitively cis-aligned.
In other words, folks, the majority of trans Americans who have changed their passports should now consider said passports one-way tickets.
If your evac plan is Europe, however, there is technically nothing stopping you from crossing into Canada via land border and flying to Europe fron there, as Canadian officials decide who may enter Canada via land border.