Apparently this needs to be explained again. Bob is NOT influenced by Richard Nixon. His character was patterned after one of my favorite character actors, Dabney Coleman…who also resembles Nixon and has played Nixon in movies. Please note that Bob has, and has had, a mustache, like Dabney Coleman. Nixon did not have a mustache.
Please not this explanation for the next time Bob appears with Joe (they’re brothers, by the way) so I don’t have to say it over and over again.