Can we test our clowns too?

Tiririca the Clown ran for election in Brazil and actually won.
His fellow lawmakers, however were not amused and are forcing him to take literacy tests in order to prove that he is not amongst the 10% of Brazilians that cannot read or write.
He passed his first closed door test by proving he can read and write, now they want to test him further.

So the question this brings up is: Shouldn't we have our elected representatives prove some minimum competency when it comes to things like economics, government, the Constitution, etc.?
(I wonder if he hoped to get more than a "brazillion" votes)