The legislature is made up of representatives voted in.

Republicans who wanted to prevent Trump from doing this kind of shit were voted out.

This is what the voters want.

Yes and no. It's a mistake to look at political representation as a pure expression of voters' will.

Gerrymandering keeps extreme politicians in office. Partisanship gets people to vote against their own interests. Media gravitates toward spectacle rather than substance, to the benefit of those that know how to use that; and social media in particular entrenches deeper into preconceived biases.

In short, manipulating voters is a profitable business. Electoral results are the output of that business, and voters are just the instrument.