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.

FOIA to multiple agencies seeking communications between specific Trump appointees and the Trump White House regarding the expulsion of migrants under the Public Health Safety Act Title 42, which was invoked by President Donald Trump in response to the coronavirus pandemic. Title 42 has enabled border patrol officers to expel migrants who cannot present valid entry documents at the Southern border without providing them the opportunity to seek asylum.

FOIA to multiple agencies seeking records - including orders, directives, or analyses - regarding potential safety concerns for migrants subject to expulsion under the Public Health Safety Act Title 42, which was invoked by President Donald Trump in response to the coronavirus pandemic.

FOIA to CDC and HHS seeking communications with Stephen Miller and directives from the White House regarding immigration restrictions during the coronavirus pandemic.