Yes, you haven't read or heard enough.
Among the ruling was the SPECIFIC notion that conversation between POTUS and the AG is an official act. So POTUS can prevail on the AG to prosecute anyone he chooses. And if that person has the protection of the USC, he/she may go broke defending their constitutional rights. This includes asking the DOJ to conduct sham prosecutions against anyone. And if this is now "official acts" then impeachment has no weight.
Besides, you know this, in reality, impeachment would require a Congress of one party, and a Senate with a 60 vote majority. That has happened...........never? Almost never? So in reality, POTUS will have unlimited power.
And today, FDR could NOT have done that to the Japanese. But Trump WILL do that to undocumented people in the US. And in rounding up 20 million people, mistakes will be made. US citizens WILL be caught up in this dragnet. And this WILL be an "official act". As such it will be declared legal. And who can review the legality? Not Congress. Only the Supreme Court. And of course the current nine will tilt greatly in favor of a Republican POTUS and against a Democrat.
So basically what you're happy with is an imperial President protected by a Supreme Court that has anointed itself as the arbiter of what is/isn't legal. Congress will lose great power here. And Congress is THE representative of the PEOPLE.
The Supreme Court is counting on the fact that Democrats won't nominate a person likely to use this kind of power. Biden made it clear that he such a person. Trump has made it clear what he'll do given the power. And THIS Court has made it clear what they'll allow.
BTW, the President can issue a pardon- and official act- and then take a million dollar payoff. Recall that paying a gov't official AFTER the favor is not now illegal. It's only bribery if the money comes first.
Pay attention; people smarter and more nefarious than you are running this show. Just hope that they don't target fat white truckers.
IMO, likely early events will include prosecution all kinds of Trump enemies, undoing massive amounts of gov't regulation, including EPA (for sure), renewable energy regs, limits on oil/gas production, protections of federal lands including National Parks. Voting rights laws will fall quickly. The SEC will fall. I can think of more; but the future is mapped out. Most mapping will be done by the Federalist Society, led by rich white males.
In case one wonders how bad this is, many Republicans think it stinks. They know that the notion that Democrats won't put up an imperial candidate may not last forever. And an imperial Democrat can be every bit as bad as an imperial Republican.