It would be good for you (and others who don't know about this) to read up on it. According to the theory of devolution, Trump instituted COG (continuity of governance) before he officially left the WH the first time. According to this theory, Trump's been the acting President since that time. That's it in a nutshell, I think. I've read several of the articles at that link, and it does kind of make sense, when you see all the pieces laid out. Other things don't make much sense to me, though.