The current political climate isn't really favorable for Republicans, and lying their way out of what everyone can see happening is going to make a rough, tough slog between now and November. I think Paul Ryan took a look at Republican prospects, and figured that a bruising 2018 campaign was the last thing he needed. His prize, at best, is going to be a step down to Minority Leader, and even that's not a sure thing what with the Tea Baggers and their whiny ways. Who needs that?
But the Senate! There are the usual 33 seats up for election, plus 2 special election seats, and Democrats currently hold 26 of those seats. That means the Democrats have to hold every seat they currently have, and win two more to grab the majority. A 50-50 split means the Republicans maintain control. Democratic voters are pretty charged up for November and Republicans are pretty dispirited. But holding those nine seats, or failing that, flipping a Senate seat or two, would keep the Republicans in power in the Senate, where they can continue to confirm their horrible federal judge nominees for another two years. I think that is the prize Republicans are looking to win in November.
Impeachment is a long ways off, but it's doable. Public opinion has to be won first, with indisputable showing of Trump's high crimes and misdemeanors. Democrats had to pound away on Nixon's crimes for more than a year before the American people were inclined to remove a president. It's going to be tougher this time around, because of the built-in media empire working in service to all things Republican. It's going to take some heavy lifting, but our country is worth it.