California Attorney General Rob Bonta led 20 states in a lawsuit on Tuesday alleging the Trump administration unlawfully shared public health insurance information with Immigration and Customs Enforcement officials.

Colorado and 19 other states are suing the federal government in order to prevent Medicaid data from being shared with US Immigration and Customs Enforcement (ICE).

The lawsuit argues that federal law only allows states and the federal government to share Medicaid enrollees’ personal data if necessary to run the program or to identify fraud.