Canada updated its travel advisory for the US, telling travellers to "expect scrutiny at ports of entry, including of electronic devices," adding, "If you are denied entry, you could be detained while awaiting deportation.": https://travel.gc.ca/destinations/united-states
Comments
"Authorities may request proof of legal status in the U.S. at any time. Be prepared to show evidence of your legal presence in the U.S."
Does that mean people would be expected to have their passport with visitors visas on their person at all times or risk détention!?
I never carried my passport on my person when I was out in public in a foreign country and certainly never in a G7 country for fear of detention!
incl one equating having changed your gender markers on ID to fraud
I think that warrants a warning
they just want to keep trans refugees out
so they don't want to admit trans folks are in danger
I imagine there's a hesitation to be alarmist in official guidance, but that doesn't seem to accurately describe the situation.
DO NOT TAKE THE RISK YOU MAY BE ILLEGALLY TRANSPORTED TO EL SALVADOR PRISON OR LOUISIANA HOLDING CELL! 
No thanks.