A growing number of states are opening taxpayer-funded health insurance programs to immigrants, including those living in the U.S. without authorization, even as Republicans assail President Joe Biden over a dramatic increase in illegal crossings of the southern border.

Eleven states and Washington, D.C., together provide full health insurance coverage to more than 1 million low-income immigrants regardless of their legal status, according to state data compiled by KFF Health News. Most aren’t authorized to live in the U.S., state officials say.

Enrollment in these programs could nearly double by 2025 as at least seven states initiate or expand coverage. In January, Republican-controlled Utah will start covering children regardless of immigration status, while New York and California will widen eligibility to cover more adults.

“These are kids, and we have a heart,” said Utah state Rep. Jim Dunnigan, a Republican who initially opposed his state’s plan to cover children lacking legal status but relented after compromises including a cap on enrollment.

There are more than 10 million people living in the U.S. without authorization, according to estimates by the Pew Research Center. Immigrant advocates and academic experts point to two factors behind state leaders’ rising interest in providing health care to this population: The pandemic highlighted the importance of insurance coverage to control the spread of infectious diseases; and some states are focusing on people without legal status to further drive down the country’s record-low uninsured rate.

States have also expanded coverage in response to pleas from hospitals, lawmakers say, to reduce the financial burden of treating uninsured patients.

All states pay hospitals to provide emergency services to some unauthorized residents in emergency rooms, a program known as Emergency Medicaid. About a dozen states have extended coverage for only prenatal care for such people. Full state-provided health insurance coverage is much less common, but increasing.

An estimated half of the people living in the U.S. without authorization are uninsured, according to a KFF-Los Angeles Times survey. That’s more than five times the uninsured rate for U.S. citizens. Immigrants lacking authorization are ineligible for federal health programs. But states can use their own money to provide coverage through Medicaid, the state-federal insurance program for low-income people.

California was the first state to begin covering immigrants regardless of their legal status, starting with children in 2016.

“This is a real reflection of the conflict we have in the country and how states are realizing we cannot ignore immigrant communities simply because of their immigration status,” said Adriana Cadena, director of the advocacy group Protecting Immigrant Families. Many of the millions of people without permanent legal residency have been in the United States for decades and have no path to citizenship, she said.

These state extensions of health coverage come against a backdrop of rising hostility toward migrants among Republicans. The U.S. Border Patrol apprehended nearly 1.5 million people in fiscal year 2023 after they crossed the southern border, a record. GOP presidential candidates have portrayed the border as in crisis under Biden, and dangers of illegal immigration, like increasing crime, as the nation’s top domestic concern.

Simon Hankinson, a senior research fellow specializing in immigration issues with the conservative Heritage Foundation, said states would regret expanding coverage to immigrants lacking permanent legal residency because of the cost. Illinois, he noted, recently paused enrollment in its program over financial concerns.

“We need to share resources with people who contribute to society and not have people take benefits for those who have not contributed, as I don’t see how the math would work in the long run,” Hankinson said. “Otherwise, you create an incentive for people to come and get free stuff.”

Most adults lacking authorization work, accounting for about 5% of the U.S. labor force, according to the Pew Research Center. The state with the most unauthorized residents with state-provided health insurance is California, which currently covers about 655,000 immigrants without regard for their legal status. In January, it will expand coverage to people ages 26-49 regardless of their immigration status, benefiting an estimated 700,000 additional Californians.

Connecticut, Maine, Massachusetts, New York, Rhode Island, Vermont, Washington, D.C., and Washington state also provide full coverage to some people living in the U.S. without authorization. New York and Washington state are expanding eligibility next year.

Oregon, Colorado, and New Jersey in recent years began covering more than 100,000 people in total regardless of legal status. Minnesota will follow in 2025, covering an estimated 40,000 people.

While states are expanding coverage to people living in the U.S. potentially without authorization, some are imposing enrollment limits to control spending.

The cost of Utah’s program is capped at $4.5 million a year, limiting enrollment to about 2,000 children. Premiums will vary based on income but cost no more than $300 a year, with preventive services covered in full.

“The pandemic highlighted the need to have coverage for everybody,” said Ciriac Alvarez Valle, senior policy analyst for Voices for Utah Children, an advocacy group. “It will make a huge impact on the lives of these kids.”

Without coverage, many children use emergency rooms for primary care and have little ability to afford drugs, specialists, or hospital care, she said. “I am not sure if this will open the door to adults having coverage, but it is a good step forward,” Alvarez Valle said.

Colorado also limits enrollment for subsidized coverage in its program, capping it at 10,000 people in 2023 and 11,000 in 2024. The 2024 discounted slots were booked up within two days of enrollment beginning in November.

Adriana Miranda was able to secure coverage both years.

“You feel so much more at ease knowing that you’re not going to owe so much to the hospitals,” said Miranda, 46, who is enrolled in a private plan through OmniSalud, a program similar to the state’s Obamacare marketplace in which low-income Coloradans without legal residency can shop for plans with discounted premiums.

Miranda left Mexico in 1999 to follow her two brothers to the United States. She now works at Lamar Unidos, a nonprofit immigrant rights group.

Before she had health insurance, she struggled to pay for care for her diabetes and racked up thousands of dollars of debt following foot surgery, she said. Under the state program, she doesn’t pay a monthly premium due to her low income, with a $40 copay for specialist visits.

“I was really happy, right? Because I was able to get it. But I know a lot of people who also have a lot of need couldn’t get it,” she said.

OmniSalud covers only a small fraction of the more than 200,000 people living in Colorado without authorization, said Adam Fox, deputy director of the Colorado Consumer Health Initiative. But starting in 2025, all low-income children will be able to be covered by the state’s Medicaid or the related Children’s Health Insurance Program regardless of immigration status.

“There is a growing acknowledgement that people regardless of their immigration status are part of the community and should have access to health care in a regular, reliable manner,” Fox said. “If they don’t, it adds costs and trauma to the health systems and communities.”

KFF Health News senior audio producer Zach Dyer contributed to this report.

KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism.