Well, I agree with you that it sounds like they are trying to build a case.
Unfortunately, your legal rights in this situation are limited. The rule is called "employment at will
." This means they can fire you for any reason, no reason, or a bad reason, if they want to. There are two exceptions to the rule.
One is if they are after you for an illegal reason, like your race, gender, religion, or disability status, or the like.
The other point is, if they let you go for no reason (or a reason they can't justify) you will be eligible for unemployment benefits
as if you were laid off.
My best advice is to keep all the paperwork, keep notes of any meeting, and most important, keep your cool (which you are already doing). This way, if the worst happens, you will be in the best position at that time.
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