They for sure can impeach him. The problem is trying to convict him in the Senate. They don't have the numbers, it takes a 2/3 majority. And I don't think any of the republicans in the Senate have the balls to try to convict Trump. And far too many of them are MAGA assholes themselves.

However there is a plethora of people under Trump that they can go after and easily put under the spotlight. Taking out his foundation will be far more effective at neutralizing him.