Why did people wind up in prison then? He was not given the task of trying to dig up dirt on Trump. His job was to look into the allegations to see what, if anything, was there.Meuller didn't do his "job", he knew early on that the dossier was fake and proceeded to go on a fishing expedition. He had no basis to proceed except for a witch hunt.
I don't begin my thinking with assuming things. You assume Meuller knew the dossier was fake. I don't assume that. Indeed I'd say much in that dossier was true. It was not clear which parts were true, which false. Mueller's job was to dig up facts to find that out. Some Democrats might have liked it had he been conducting a witch hunt; and many Republicans might have slept easier at night without that investigation -- people on both sides were biased, and you just revealed where your bias lay.
Trump himself said the Meuller investigation exonerated him. Yes, after calling it a witch hunt so many times, Trump then said it "totally exonerated" him -- which also was not true. What Meuller did say was that Trump might be possibly indicted after he leaves office.
Putin joked once that maybe they should get a place for Trump ready -- he may need a safe place to live later.
I wonder how that lawsuit in Panama will go. If Trump is found guilty of evading taxes, would it be enough if he paid them, or might Panama want to send him to prison? Just wondering. . . . That might depend on whether the fraud allegation can be proved -- or if he knew people buying units were using drug money. I also wonder what other countries may do if Trump loses the election. Right now, they may not want to do much since offending a sitting President of the US isn't a good idea; but if he becomes an ex-president, who knows who may choose to sue him or file charges on him successfully with warrants for his arrest making it unsafe for him to travel in some countries?