Another recent change was Trump pushing for the filibuster to be removed. The establishment could just claim it was because they need it to stop him so they should never stop him enough that he would make Republicans do it, but it could also be seen as a freedom they don’t want to have should we get a Democratic trifecta in the future. Being able to say “I want to do good things, but shucks the system stopped me” is a valuable tool for elected officials.