On and off ramps for sure. Making it illegal to transact or own would be far-fetched but not out of the realm of possibility. The ensuing court cases would give a long time for those with "portable" wealth to leave and get down south and many would as it's just been so stupid up here for so long that it feels like a lost cause much of the time.
Discussion
Attacking transaction channels would be a huge waste of effort, honestly I’d love to see them try. We need better and more government resistant on ramps for sure