Covid had plenty of travel restrictions, took less than a week to set them up. There’s already issue with people being falsely flagged as terrorist or other no-flight risk, and with some of the anti-leftist rhetoric it’s not a big leap to make. Also it’s entirely in line with Russia labelling LGBT as terrorists, which several GOP/MAGAts are breathing heavily over.
I hope you’re right, I just don’t see anything but decorum stopping them, and they’ve repeatedly thrown that out the window.