Had Trump been willing to say “What I did was wrong, but not impeachable,” I doubt that House Dems would have even been able to find the votes to censure him. Blue Dog Dems would have felt too pressured to just let the matter go in the lead-up to an election year to support such a move. And Pelosi would have likely seen the optics of a House censure but Senate rebuff as not even worth the effort.