“We have been extremely patient, but we can wait no longer,” Oversight and Reform Committee Chairwoman Rep. Carolyn B. Maloney, D-N.Y., and Appropriations Committee Chairwoman Rep. Nita M. Lowey, D-N.Y., wrote.

The formal presidential transition doesn’t begin until the GSA administrator ascertains the “apparent successful candidate,” in accordance with the Presidential Transition Act of 1963. There are no specifics on how that determination should be made, however.

The senior lawmakers gave Murphy until Monday to provide the briefing. They warned in a letter sent to her sent Thursday that depending on the information provided in the briefing, that she, along with her deputy, chief of staff, and general counsel, might have to take part in a public hearing to explain themselves.