Five of nine Supreme Court members, and five of six Republican Supreme Court members, were executive branch attorneys dedicated to finding ways to expand presidential power at the expense of Congress. As justices, they act with a bias against Congress and in favor of presidential power…at least as long as that president is doing Conservative things.
Presidential power breaks down when the president is not faithfully enacting the laws of Congress, which he is required to do by the Constitution!, and when the president acts corruptly, aiming to enrich himself and his friends and family rather than do what is best for the country.
Trump uses his power as president to change US policy specifically to punish businesses owned or run by people who didn’t support him politically and in favor of those who do support him or are related to him.