The Republican Party seems ready to repudiate the Supreme Court, which has ruled by a 5-4 vote that Texas cannot keep barriers up to keep migrants out, that has led to the drownings of a mother and children.
The idea that Chief Justice John Roberts and Associate Justice Amy Coney Barrett joined the three Democratic appointments on the Court—Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson—is causing many Republicans to go insane.
So the answer seems to be that many Republican state governors are joining a movement to defy a Court that has a conservative super majority, but at times, acts rational.
This is the effect of Donald Trump, further undermining the legitimacy and survival of the Republican Party which started in 1854 as a party of principle, opposition to slavery and its expansion!