There are lists of the worst decisions of the Supreme Court in history (eg [1]). Dred Scott [2] often tops such lists. I believe that Trump v. United States [3] will go on such lists in the near future. Why? Because it opened the floodgates on corruption on a scale we previously haven't seen. The president has absolute immunity. The president's communications with the Attorney-General can't even be examined, basicall…
That's not true. Congress still has the power to impeach with the a conviction in the Senate removing the sitting president. The problem is that both chambers of Congress are lead by sycophants of the president. All SCOTUS did was put an asterisk to the notion that "no man above the law". It's a big fat asterisk to be sure, but they gave themselves a little wiggle room.