They wont, but, what they can do is find things that, in the surface, appear fishy, and they will spin that and release it to the public with out of context information and explanation. The public, not knowing the difference, will devour it, and the court of public opinion will sway against trump.If the IRS under Obama when Trump was a candidate could find no abnormalities after who knows how many audits, then what makes you think those nitwits in Congress will do any better? The truth is, this isn't about justice; it's about looking for anything they can find that might be politically damaging but legal. And it's also about grandstanding to their base, same as this whole BS over Russian collusion was.
In this country you are innocent until proven guilty, and we all have legal rights and that includes Donald J. Trump. IF you have evidence that supports the suspicion of wrongdoing then you take it to a judge and you get a warrant. But it sure as hell better be something other than a political hit piece paid for by the opposition party and campaign that is based on allegations by Russians. We should not be using our justice system for political purposes, and that is precisely what the Dems are trying to do. Piss on 'em.