The American government has just gotten the world population statistics in, and they've found out there are over four times as many people in both China and India as in America. This could give them far greater workforces and the ability to eclipse the US as world superpowers someday.
Meanwhile, Americans weren't nearly so eager to have children, and they were so far behind any encouragement scheme would be laughed off. But scientists came up with two genius ideas: they found a way to make human gestation advance rapidly and dull all pain it caused the mother, and a way to change human's sexes. Using compensation they'd hire people to mate, give birth, have their sexes changed and then mate again. They'd then put the produced babies up for adoption, or use the formula used to accelerate gestation to accelerate aging until the babies produced became adults and then have them go out into the world.
The scheme starts in a small American town, and a young horny person signs up to take part. Who is this?