The action will allow participants in the Obama-era Deferred Action for Childhood Arrivals program, or DACA, to access government-funded health insurance programs.

“They’re American in every way except for on paper,” Biden said in a video released on his Twitter page. “We need to give Dreamers the opportunities and support they deserve.”

The move is likely to generate significant pushback from conservative leaders of states that have been have been reluctant to expand Medicaid and critical of the Biden administration’s response to migrants who enter the U.S. illegally. While the federal government provides funding and guidelines for Medicaid, the program is administered by the states.

Then-President Barack Obama launched the 2012 DACA initiative to shield from deportation immigrants who were brought to the U.S. illegally by their parents as young children and to allow them to work legally in the country. However, the immigrants, known as “Dreamers,” were still ineligible for government-subsidized health insurance programs because they did not meet the definition for having “lawful presence” in the U.S. Biden’s Department of Health and Human Services will aim to change that by the end of the month.

The White House action comes as the DACA program is in legal peril and the number of people eligible under the program is shrinking.

An estimated 580,000 people were still enrolled in DACA at the end of last year, according to U.S. Citizenship and Immigration Services. That number is down from previous years. Court orders currently prevent the U.S. Department of Homeland Security from processing new applications. The DACA program has been mired in legal challenges for years, while Congress has been unable to reach consensus on broader immigration reforms.

DACA recipients can work legally and pay taxes, but they don’t have legal status and are denied many benefits available to U.S. citizens and foreigners living in the U.S.

In recent years, millions of people in the U.S. signed up for Medicaid, the program that provides health care coverage for the poorest Americans, during the COVID-19 pandemic. The government increased federal subsidies to drive down the cost of plans on the Affordable Care Act’s marketplace. As of last year, just 8% of Americans were without health insurance, according to HHS.

But DACA recipients, as well as those in the country without documentation, are barred from joining those federally funded programs. About half of the roughly 20 million immigrants who are living in the U.S. without documentation are uninsured, according to research from the Kaiser Family Foundation.

While there’s bipartisan support to enact some sort of protections for the immigrants, negotiations have often broken down over debates about border security and whether an expansion of protections might induce others to try to enter the U.S. without permission. Biden, a Democrat, has repeatedly called on Congress to provide a pathway to citizenship for immigrants brought to the U.S. illegally as children.

Other classes of immigrants — including asylum seekers and people with temporary protected status — are already eligible to purchase insurance through the marketplaces of the ACA, Obama’s 2010 health care law, often called “Obamacare.”