I wonder of Moscow Mitch is now regretting his defense of Trump during the impeachment proceedings.
I am sure it made sense at the time... keep Trump and his voter base happy, use voter suppression and other tricks to win the electoral college and senate, and get another few years in power. Now, thanks in part to Trump, they've lost both congress and the white house, and Trump is still threatening to cause all sorts of havoc in the next few years. (Problems that could make it harder for the Republicans to retake congress.)
Had republicans acted to impeach Trump, they might have angered the MAGAchuds back then (and they still might have lost the white house as a result), but with Pence in charge, without Trump's incompetent meddling they might have managed to maintain control of the senate.