A large part of the Republicans' strategy is to appoint partisan judges & let them legislate from the bench for the rest of their lives. Talking up thread about "the biggest problem", this is probably it. In the context of climate change, recently we can see SCOTUS shooting down environmental protections. This happens in lower courts too, but those don't make national news.
"The President might not sign the bill, however. If he specifically rejects the bill, called a veto, the bill returns to Congress. There it is voted on again, and if both houses of Congress pass the bill again, but this time by a two-thirds majority, then the bill becomes law without the President’s signature. This is called “overriding a veto,” and is difficult to do because of the two-thirds majority requirement."