"We can sit here and talk about costs as much as we would like, but I think we really need to be honest about what this is truly about ... political beliefs and standing on what to do with immigration," Gray said.

The cost has been transferred to hospitals and clinics that are now seeing those patients without Medicaid insurance.

In the past year, Creighton has delivered about 30 babies a month whose mothers were undocumented.

Andrea Skolkin, chief executive officer of One World Community Health Centers in Omaha, said that in the past year, only about half of uninsured women are receiving any prenatal care.

The health center has more premature births to uninsured women, compared to insured women. Uninsured mothers were twice as likely to deliver through cesarean section, which is more expensive.

At the Good Neighbor Community Health Center in Columbus, the number of female patients has doubled, and the income for the prenatal program has dropped drastically, said Rebecca Rayman, executive director. Women are coming to the center from 22 counties.

Even with shifting money from other programs, the clinic finished 2010 losing $167,530.