American Oversight has launched several investigations into the public health provision, obtaining complaints and allegations sent to the DHS Office of Civil Rights and Civil Liberties as well as emails that reveal the role played by former White House aide Stephen Miller in developing the policy.

Lawsuit filed by American Oversight against the U.S. Department of State, the Department of Health and Human Services, and the Centers for Disease Control and Prevention seeking the release of records concerning Title 42.

FOIA request to the U.S. Department of Homeland Security, the State Department, U.S. Department of Health and Human Services, and the Centers for Disease Control and Prevention for top officials' sent email communications with White House or National Security Council officials regarding Title 42.