The House Committee on Oversight and Reform authorized a series of subpoenas Tuesday targeting Attorney General William Barr, Commerce Secretary Wilbur Ross, and two other officials with knowledge of the administration’s proposed U.S. Census citizenship question and alleged abuse of the White House’s security clearance policy.

The committee’s subpoena resolution related to the citizenship question also demands Justice Department documents and DOJ’s communications with Ross in 2017 and 2018, when Ross proposed that the citizenship question be added to the 2020 census.

Both subpoena resolutions passed on party-line 22-15 votes.

“The committee is trying to determine the real reason Secretary Ross added the citizenship question, and the documents and testimony covered by these subpoenas are critical to answering that question,” Chairman Elijah Cummings said Tuesday at a committee business meeting.

Watch: Subpoena scuffle divides Oversight committee