Having actually WATCHED Fargo season 2, it’s actually quite good.
The Reagan scene was at the beginning of the 1st episode in a flashback to a Western being filmed in the area in the 50’s.
There hasn’t been anything else with him in it since.
You didn't watch last night's episode? While I like Fargo, and season two is looking to be very good, and I like Bruce Campbell, the portrayal of Reagan last night was very poor. Yes, they are slamming Carter left and right, as well, but they paint a man who truly loved his country, and wanted us to again be a "Shining City on a Hill", as a bumbling idiot, already suffering from Alzheimer's and being disingenuous.
You missed last night then.
Last night’s episode had Reagan and the State Patrol guy, Lou Solverson, discussing life & politics in the Men’s room, standing at the urinals. Won’t spoil it anymore than that for you.