This is a likely tempest in a teapot that Fox news will stir vigourously I’m sure. This will be bashed as a liberal biased movie.
Seems like maybe it is, John Cusack as Nixon doesn’t seem to work in my mind other than I suspect he really hates Nixon. I’m not sure he’d remember though.
Eisenhower is not cast yet, so I’ll suggest Gene Hackman, though he maybe too intense for likable Ike.