If it's your opinion that an impeachment inquiry would necessarily be redundant because it would be impossible for them to have access to any information that other inquiries don't already have access to, then can you tell me which inquiry, for example, already has Trump's tax returns?
What on Earth is his tax return going to do?
He's openly racist, openly xenophobic, so deep in Putin's pocket he's got Putin's keys stuck in his comb-over, runs concentration camps, mocked a disabled person, and those are just the ones that I can rattle off of the top of my head, and his supporters have either denied or rationalized ALL... OF.... THAT and you think his goddamn tax returns are going to shock them?
The investigation would have to uncover stuff worse then the stuff he's already done. And that's not even counting the fact that the luck these investigation's have been having the Dems are going to investigate Trump's tax returns and wind up finding out he's owed a refund.
Here we'll ask the board's Trumpers. If we investigate Trump's taxes and find them dirty, are you going to stop supporting him?