How far Chinese moms will go to have U.S. babies

It's no secret -- moms will do just about anything for their kids.

Some are even willing to commit visa fraud, lie to immigration officers and pay tens of thousands of dollars to shady middlemen -- as long as the payoff is a U.S. passport for their newborn.

An underground "birth tourism" netork that stretches from the U.S. to China has sprung up to cater to growing numbers of Chinese mothers who travel stateside to give birth, according to affidavits filed by federal law enforcement officers. The moms are lured by laws that grant U.S. citizenship to anyone born on American soil.

Department of Homeland Security agents carried out a series of"birth tourism" raids earlier this month as part of a larger criminal investigation targeting companies in California that have netted millions helping pregnant Chinese women fraudulently secure visas and scam hospitals.