In the Middle Ages it was illegal for a blind man to become a king.
I mean, I don't see why not.
Blind Man King
Explanation
Explain Bear
Alright listen up, dummy. Back in the Middle Ages, people were superstitious and dumb as rocks. The joke plays on the literal meaning of "see." A blind man cannot "see" to rule, get it? It's like saying you can't "hear" the TV because you're an idiot!