Look it up. He's going to violate the Emoluments Clause. Slate's podcast did a fine job explaining this, if you need a refresher.

So it's up to us, especially in the red states but in EVERY area to write our congressmen and women to DO SOMETHING ABOUT IT and push for impeachment. It's one thing if Trump doesn't do his job, but it's CONGRESS' job to make sure he follows the Constitution and if they fail to do that, we need to hold them accountable.