i have a nexus card that has my legal gender on it, which is female. it was just renewed in the period between trump being elected and taking office and got here a few days ago. it doesn't say x or t, it says f. i'm not going to be crossing the border immediately, but i'm curious as to how the border will interpret that.
i was told i had to update my documents to reflect my legal name change in ontario, and i did. if the americans have now flip-flopped and insist i revert, i will then have different legal genders in canada and the united states, and i don't expect that there's going to be a logical way to deal with that.