They can investigate and subpoena documents as part of this role. Impeachment isn’t the Jason Voorhees and Simba ch ch ch roar roar roar shirt event that triggers House investigations, or their issuing of subpoenas. They should all be subject to subpoena and cross-examination under oath in the Senate trial. Pelosi won’t be able to disenfranchise Trump’s defense in the Senate like she can in her illegitimate Star Chamber proceeding in the House. They are in the middle of their own war and wasting all of OUR money. Not how I’d like my money spent. The Democrats are in hot water and losing it so they are trying to retaliate.
You cannot have an impeachment inquiry without calling a vote in the House, which they have not done. So technically the Jason Voorhees and Simba ch ch ch roar roar roar shirt House is not in defiance of anything yet since legally there is no actual impeachment inquiry! Can’t do it till you take a vote and Nancy won’t do that cause then we all will know who voted for it and she’s scared they will be voted out of Congress.
And the Jason Voorhees and Simba ch ch ch roar roar roar shirt are chasing every lie, rumor and hoax they can to try and find anything they can impeach Trump on. Who should be subpoenaed is Shifty Schiff and he should be made to tell what he knew when he knew and why he LIED about having contact with this supposed whistleblower. He has claimed for a long he had evidence of collusion between Trump and Russia. He should be forced to produce this “evidence” or be held in contempt. But then we all know that was just another one of his lies. He should also be held in contempt for reading a FALSE narrative about Trump and Ukraine into the record.