I honestly don't know how you can say this. What is happening right now is no different from the Benghazi investigation of Secretary Clinton. Trey Gowdy argued that closed hearings were the best approach to getting reliable testimony. He is a Republican and former prosecutor. The Democrats have already said that this will move into a public venue with release of the transcripts. Arguing over procedure or making over the top statements such as the above doesn't to the Republicans any good. As with yesterday's intrusion of a secure hearing room, it makes them look petty and foolish.
I don't think it makes all Republicans look petty and foolish, but those Tea Party guys are basically idiots and they do much damage to the Republican Party, which is a shame. We really do need a strong two party system, IMHO. I think Joe is way off base with his predictions of damage to the Democrats by the current investigation. Eventually, I think two things will damage Trump almost irrecoverably: the disaster in Syria and the extortion in the Ukraine. There was apparently nothing illegal about his decision in Syria, but the PR is so terrible that I think it turned lots of people against him, who might have otherwise stuck with him, even if holding their noses. Even the military is getting restive, as you see in comments from retired military people, including his former secretary of defense. The Ukraine deal was typical thuggish Trump strong-arming, and that could get him impeached. I still doubt that he'd be convicted in the Senate, no matter what he did.
One thing we don't know about is what's going to happen when the appeals court orders the IRS to give his eight years of tax returns to the Manhattan prosecutor. Manhattan, of course, leans Democratic (I joke) and Trump has a long and ugly history of cheating on his taxes. It's interesting that they asked for eight years of tax returns -- going back before he was President, and when he might not have been seriously thinking of running, and therefore might have felt freer to cheat. If he did that, I would expect state indictments about the most delicate time for Trump in the election process. Say, about next October, close enough to the election to to do serious damage, not far enough away for him to mount an effective defense.