The film takes place in the year of 1981 which is about eight years prior to the time Southside with You (2016) is set in which is the year of 1989.
They're uh, different races. I'm guessing that's what Kathy meant.
James Boggs: Ah, I see
Barry: My mom's from Kansas, and my dad's from Kenya. I've only met him once though. I grew up in Jakarta and Honolulu, and spent a little time in California, then well, I ended up ...
Barry is seen wearing a Casio F91W watch throughout the movie. The movie is set in the early 1980's, but that model watch wasn't released until 1991.