A new study accuses California of funneling billions of federal dollars into paying for illegal immigrants’ healthcare.

Fox News reports the paper released by EPIC and the Paragon Health Institute draws a line between California’s Medicaid provider taxes and what appears to be nearly $4 billion in state funding going toward illegal immigrants’ healthcare and other initiatives.

Under current law, states are required to pay Medicaid providers the same amount as taxes raised.

The federal government then matches those payments by 60% in an effort to help states recoup some Medicaid costs.

The paper states those funds were “used to implement major expansions in the Medicaid program to fund illegal immigrants and long-term care for the wealthy.”