There is a moral rot at the core of Trumpism, which every day disgraces our country, which we are proud of and love. Trump and Vance have to rebut the idea that America is the embodiment of universal ideals. If America is an idea, then Black and brown people from all over the world can become Americans by coming here and believing that idea. If America is an idea, then Americans have a responsibility to promote democracy. We can’t betray democratic Ukraine in order to kowtow to a dictator like Vladimir Putin.