One child per marriage actually reduces the population by my highly sophisticated calculations. Seems like two should be ok.
Beat me to it:
Actually, when you think about it, you only need limit child birth to two children. One child for each parent. Growth stops. Having one child would result in population contraction, if it were to be followed strictly.
Enhanced sex education would stop some growth. Provide free condoms another. Provide free sterilization, and encourage it with some sort of tax credit. Any number of things really.
To me, the reality of this terrible situation is that a good amount of the population expansion is not from families that can afford it, but families that can't. There are exceptions, obviously, but it just seems like people that have a greater amount of kids are less educated, and have less meaningful income. I know someone who has four children, of which he now has custody of none, as he does not have the means to support them, nor does his wife. Neither parent is educated, and neither parent has a job that is more meaningful than a cashier at Taco Bell, yet they have four kids.
The simple truth is that it is easier to have a kid than it is to adopt a puppy from the humane society. They have restrictions on who can and cannot adopt an animal. Any person can create life with another person (of the opposite sex of course), and there isn't a single form you have to fill out to do it.
My suggestion would be to offer free snipping and a tax credit to those that get snipped. Want to be on welfare? You gotta get snipped. If you're a female, you have to take birth control. If you have another child, your welfare will be terminated.
That might not be fair, but neither is an honest family limiting themselves to two children because that's all they feel they can afford, when another family has four or five children and is largely supported by the government. Case in point, my wife and I are likely going to have two children at the most because it is more financially feasible than three or four. Our home should be a much better environment for our kids than that of the guy I mentioned earlier. It's really ridiculous when you sit back and think about it. Good parents have fewer kids because they realize their financial limits, but yet support others (who don't realize their financial limits) by way of taxes.