This is their response to realizing that Trump's tariffs could cause them to lose the house and the senate for 60 years.
Their response isn't to maybe reflect on their behaviour and maybe stand up to the orange twat. But instead their response is to make sure that the Judiciary doesn't have the power to stop him and therefore prevent them ever getting voted out.
I would argue that he already thinks the rest of the world are vassals and always have been.
When he puts out demands to foreign companies and calls it "an issue of compliance"; it's clear he's not thinking of other countries as equals.
He thinks we're vassals and this is how we all should have been treated all along since WW2.