The Onion

It is easy to implement, it's hard to enforce because not everyone is going to be forthcoming. My city is rent controlled, passed by a healthy margin, but not all landlords are self reporting. The protections still stand, renters needing to present to the renters department at city hall.

But your point stands in more conservative areas which would be inundated with campaign donations, ads, and just overall lack of faith in functioning government.