Re: "Americans are grateful..."
Sasse's an ass, even by Nebraskan and Congressional standards. Sadly, he learned political rhetoric at Harvard, St John's, and Yale, with a brief stopover at Oxford. He's just not very good at it.
In any case, Sasse is very much a participant in US right-wing circles of power. Prior to pontificating in the Senate, he had stints at Boston Consulting Group, the DHS, and private academia. There's more info available in Wikipedia and elsewhere, but it's a depressing read.
He was one of the feebly-anti-Trump members of Congress, but never to any actual effect.