Both Democratic and Republican lawmakers keep getting denied access to tour facilities holding undocumented immigrant children who have been separated from their parents, causing some to speculate whether the federal government is shielding the living conditions there from public scrutiny.

Most recently, Democratic Rep. Mark DeSaulnier was turned away Sunday from visiting a center in his district in Pleasant Hill, California, after previously receiving permission to tour the facility from an official in the Health and Human Services Department.

“I am now being told that this is not the case, and being directed to tour one of several facilities in other parts of the country,” DeSaulnier wrote in a letter to the federal Office of Refugee Resettlement, a subsidiary agency of HHS, the San Francisco Chronicle reported.

DeSaulnier added that he is “concerned that the Administration is attempting to only show Members of Congress certain facilities that highlight the quality of care [the White House claims] all children in detention are receiving.”

He has requested that HHS reconsider his request to visit the facility.