Overall his record as POTUS was stellar, but Reagan did blow a few calls along the way.
The idea of sending a teacher into space was one of them.
Promising to nominate a woman to SCOTUS, taking a Democrat deal on border security, caving to MADD to use Federal highway money to blackmail states, and pulling the Marines out of Lebanon (which encouraged the OBL types to do more terrorism) all come to mind.
Promising to nominate a woman to SCOTUS, taking a Democrat deal on border security, caving to MADD to use Federal highway money to blackmail states, and pulling the Marines out of Lebanon (which encouraged the OBL types to do more terrorism); destroying the US Commercial Fishing Industry - particularity the tuna, bottom fish, cod, and salmon Industries.