Eh, I don't even think overpopulation in the US is a problem to begin with. Look at how much land practically nobody is living on. Hell, just drive from Atlanta to Valdosta and there is basically nothing in that 200-mile stretch just along I-75. When people stop building cul de sacs for McMansions, I might worry about overpopulation. ;)

In my opinion, the government needs to stay the hell out of our private lives anyway.