in the US you loose your right to abortion entirely
This is a massive, massive exaggeration of the state of abortion access in the US.
The US is now trying to take Panama, Canada and Greenland
Trump likes to bluster. The US will not be invading Panama, Canada, or Greenland.
The US isn’t moving like you think it is moving. And that seems to be throwing off your views on how European and US relations have been and will continue to develop over the next decade.
On how to respond; if it’s on the internet: It’s rude and stifling discussion, downvote and move on.
If it’s in person: Probably a good time to change topic. Or, if it is something that is actually important for that specific person, you need to tell them how it directly impacts them in a way they do care about. If they still give the ‘no one cares’ response, it’s absolutely a good time to change topic.