Hypothetically that could be the result on the surface without the accused cause, and this is what I comfortably suspect. People like controversy and trump and his admin have bundles of it. It's possible that millions of searches for trump prostitute, trump Russia, trump crime, etc etc, teach the search algorithm to add that sort of stuff by default.
Well, I think you are correct if you're saying it is what it is..Not accusing Google of doing this intentionally and I don't think the President did either. Or maybe he did, I dunno.
However, there was that bit someone mentioned about precedence they give to "mainstream sites", I think that was the wording. Just imagine how that might upset the apple-cart if NYTimes, Wapo, CNN, & NBC were no longer allowed that preference, for example.