A federal case for tax evasion can’t be brought against him until he leaves office, but yes, I can see that happening, along with prosecution for other crimes.
You seem to be a regular reader of the NYT, to be able to declare their reporting to be one-sided. I applaud you for this - - it is unusual to find a UK subscriber, and even more unusual for a UK expat in Argentina to subscribe to a US newspaper.
I would suggest that you might want to go into their archives to look at their treatment of Democratic presidents. I’m thinking specifically of their laser-focused reporting on Bill Clinton’s “bimbo eruptions” during his campaign as well as leading the Monica Lewinsky investigations while he was president.