The key word here is "PROPERLY." A witch hunt and or fishing expedition aren't "PROPER" ya must have actual evidence of a tax crime first.
...and even then, it would be referred to the Justice department. Not a public clown show on the floor of the House.
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)