Rep. Elijah Cummings

"He lived the American dream, and he wanted it for everyone else," House Speaker Nancy Pelosi said. The Baltimore congressman also helped to lead the impeachment inquiry into President Trump.

More than two dozen people, including two current senior officials, received security clearances after their initial denials were overturned by other top officials.

The military investigation could force the retired general to forfeit hundreds of thousands of dollars to make up for payments from entities linked to foreign governments.

The heads of the House Oversight Committee described "troubling" classified documents about former national security adviser Michael Flynn, and said the White House is refusing to release some data.