I was actually going to order the DVD of this movie, since I'm into cheesy 90's movies, but it's now free on YouTube as of a few days ago.
Anyhow, the movie is called Dave, starring Kevin Kline and Sigourney Weaver. It was one of the early "president" movies that came out during Clinton's presidency. It depicts an absolutely shallow douche as the president. His handlers have to find a replacement double to take over the role for a time, in case of the emergency that eventually happens.
30 years ago, when it came out, it was thick with fantasy situations, which made it a thoroughly unbelieveble, and charming movie. It hits a little different today, for anons anyhow. Now it's free on a large platform. Comms? Perhaps.
That was a fun movie. Charles Grodin was great in it too!