> Its interesting, you don't have enough republicans united to pass any of the agenda as law instead of executive orders

No, the decision to use executive fiat to normalize dictatorship is not undertaken because of the absence of support for the policy, but because of presence of support for normalizing dictatorship and avoiding the public in-advance debate of the legislative process.

a) You need 2/3 of senators to vote to convict, so you would need ~20 Republicans to get on board.

b) Impeachment is a political action; plenty of politicians can disagree with portions of their party's legislature enough to vote against it without saying "I'd like to burn down my party's control of the government (and thereby my career) over this".

Impeachment (in the senate its conviction, technically) requires 2/3 majority. So a few republicans breaking ranks isn't going to cut it. This is why impeachment over the Jan 6 coup attempt failed even though 7 "old guard" Republicans (i.e., Cheney) voted in favor.