I don't know if the criteria for a senator are the same or more or less stringent than those for president.
It's not. He's a legitimately — if unfortunately — elected Senator. The hilarious irony is that Cruz stated that because his mother was a U.S. Citizen, he is, too, despite not having been born in the U.S. Yet the same logic shouldn't hold for President Obama?
Dumberer and dumberer.