I don’t know. Something is clearly wrong with him.
Sasse is an oddity to me. Supposedly he was a Tea Party candidate, and at one point during the NE Senate primary Mitch McConnell got pissed at him for something. Yet I never see him taking up ideological fights the way Cruz, Mike Lee and Rand Paul do, and I’ve never heard any instance where he bucked the establishment (again, unlike the three chaps I mentioned). And for all his distaste of Trump, he didn’t even openly endorse Cruz (he did announce he’d vote for him) back in the presidential primary.
It seems he wants to be the “great man of principle” that never caved to the “RINO” Trump, so when supposedly the Trump administration is shown to be a disaster the conservative base will flock to him as the movement’s savior. Every now and then I’ll read something from people who think this way. It’s just delusional.