@Strandjunker
Grouping Katie Hill in with the other three is... certainly a thing you can do, but I wouldn't.

As for why Al Franken resigned, he was credibly accused of sexual harassment. He could have undergone an ethics investigation but chose not to do so. The Democrats pressured him to resign because they felt that the optics were bad, and they may well have been right. The Democratic base has higher standards than the Republican base for ethical violations.

Matt Gaetz is still in Congress because the Republican Party supports keeping Republicans in office at all costs, and they know that Gaetz will continue to win. If he became a liability they would abandon him. Jim Jordan is similarly insulated from repercussions, though he is also in less danger; he has done fewer things that the voters are likely to care about. Matt Gaetz appeals to the extremist base, but the Republican base is pretty extreme to begin with, so his actions against more moderate Republicans aren't a liability in the same way they might be if the base was more fragmented.

What it boils down to is that the Democrats are perhaps too concerned with optics and the Republicans are more extreme than a lot of people believe. If the latter weren't true, I think Gaetz would be in trouble.

Katie Hill was a casualty of the war on women, plain and simple. Similarly, Lauren Boebert, for all that she's a scumbag, is likely to face far more consequences for her actions than Gaetz, simply because she's a woman. She's also a less secure seat. It'll be interesting to see whether the Republicans care more about maintaining power than they do about punishing women.

@Strandjunker Because to the fascist supporters, hypocrisy is a show of strength.

They want leaders "strong enough" to abuse their power and flaunt the rules.

@Strandjunker Katie Hill seems like a different situation than the other 3

She was involved in a consensual relationship with the staffer

Franken had several women (7-8) allege inappropriate sexual touching

@Strandjunker follow up thought:

The Republican Party is made up of grifters, frauds, sex offenders, seditionists, secessionists, human traffickers, Neo-Nazis, full-on Nazis, and whatever Marjorie Taylor Greene is. If you take any one of those elements out of the equation, they lose. They need every radical, extremist, criminal nut job they can scrounge up to hold their thinnest of majorities.

@Strandjunker

To ensure that American politics would not devolve all at once into an amoral hellscape?