

In the States, anyone can attempt to sue anyone for anything. Doesn’t mean you’ll win, or that you won’t be countersued, or that you won’t be penalized for wasting the court’s time, all of which should apply to those two examples.
Our Great Pumpkin President once sued a journalist for a billion dollars because he hurt his feelings. That was not the stated purpose, but his argument was the journalist caused grievous emotional harm. To be clear, much like Trump at the time, the journalist did not have a billion dollars, and the case was thrown out. https://abcnews.go.com/Business/story?id=8100467&page=1
Was it a supporter?