Trump is changing the subject again. The news ought to be all about his serious conflicts of interest. The tweets are a means to an end: to get the news people to discuss something else. But his business portfolio is a huge problem which he must resolve or we are definitely entering a new era of corruption and/or the appearance thereof.
Is he really going to be allowed by Congress to use US power to advance his private interests?
The fact that he is doing everything he can to hold onto his business tells you everything you need to know about his intentions. There's no law about this presumably because it never occurred to anyone that democracy would produce a president like Trump.