In a letter to White House Counsel Pat Cipollone, Rep. Elijah Cummings (D-Md.), the chairman of the House Oversight and Reform Committee, highlighted how throughly the administration has stonewalled past congressional requests for information on the topic. “For the past two years, I have sought information with other Committee Members about a series of extremely troubling incidents regarding the security clearances of some of President Trump’s top aides, but the White House has refused to provide the information we requested, often ignoring our requests completely,” Cummings wrote.

Cummings is seeking all documents related to background investigations and security clearances of Trump’s son-in-law Jared Kushner; national security adviser John Bolton; former national security adviser Michael Flynn; Flynn’s son, Michael Flynn Jr.; former White House national security aide Sebastian Gorka; and former White House Secretary Rob Porter, among others.