What, over the last 4 years, has given you even the inkling of a thought that the Republican-led Senate is willing to, or even capable of standing up to Trump?

What, over the last 4 years, has given you even the inkling of a thought that the Republican-led Senate is willing to, or even capable of standing up to Trump? Trump refusing to leave is what they want, they will do everything they can to ensure that it happens. I'm aware of the meme "well the senate will change" but... what if they just don't want to either?