Personally, I've been working here legally for over eight years and I'm still not even a permanent resident, let alone naturalized; most foriegn-born cats have little chance to become citizens within their lifetime unless they have a parent who is one, marry one, serve in the military, or have enough money to invest in the U.S. that they can buy a green card. (There's also the diversity visa/"green card lottery", but Mexico is ineligible.)
U.S. presidents must be natural-born, not naturalized.
Personally, I've been working here legally for over eight years and I'm still not even a permanent resident, let alone naturalized; most foriegn-born cats have little chance to become citizens within their lifetime unless they have a parent who is one, marry one, serve in the military, or have enough money to invest in the U.S. that they can buy a green card. (There's also the diversity visa/"green card lottery", but Mexico is ineligible.)