Congress joined in a united front on President Biden’s first full day in office. All it took was a controversy involving thousands of National Guardsmen being relegated during their breaks to a parking garage.

Lawmakers across the political spectrum reacted with outrage as reports Thursday evening came in about the soldiers being forced to vacate congressional grounds after spending two weeks protecting Washington, D.C., following a deadly riot at the Capitol on Jan. 6. At this point, with Biden’s inauguration days behind the nation’s Capital, 15,000 National Guard members are preparing to leave and head home, while just 10,600 remain on duty, according to the Associated Press.

Sens. Tammy Duckworth, a veteran and double amputee representing Illinois, and Kyrsten Sinema of Arizona announced that the troops were allowed back inside the Capitol complex around midnight.

The backlash began with a Politico report that detailed how troops were told they could no longer spend their breaks at the Capitol complex. Several lawmakers offered their offices to the soldiers as a place for them to use.

“Speaker Pelosi and Majority Leader Schumer – why are American troops who are tasked with keeping security at the Capitol being forced to sleep in a parking lot? They deserve to be treated with respect, and we deserve answers,” the California Republican tweeted.

“The United States Capitol Police immensely appreciates the integral support of the U.S. National Guard in helping to secure the Capitol Complex leading up to, and including the Inaugural ceremony. The Department is grateful for their service and our strong partnership during this time,” U.S. Capitol Police spokesperson Eva Malecki said in a statement to the Washington Examiner.

“The Department’s request for National Guard assistance included a specific number of personnel to allow the National Guard to provide, at a minimum, 12 hours of off-campus rest time for the troops, and understood that this would be carried out throughout their deployment,” she continued. “Recently, the Department requested that the troops’ schedules be changed so they work no more than 8-hour shifts to allow for more off-campus rest time post-Inauguration.”

Malecki also noted that troops’ schedules are being reviewed and can be “adjusted.”

Army Brig. Gen. Janeen Birckhead, commander of the inauguration task force, said that troops will be permitted to take their breaks near Emancipation Hall instead of in neighboring parking structures moving forward.

Offering an explanation for the move to the Capitol-area parking garage, Guard spokesman Maj. Matt Murphy said they were asked to move their rest area because of increased foot traffic with Congress being in session.

One National Guard member told Politico that the troops felt “incredibly betrayed,” before they were allowed back into the Capitol complex.

“Yesterday, dozens of senators and congressmen walked down our lines taking photos, shaking our hands, and thanking us for our service,” a guard member said. “Within 24 hours, they had no further use for us and banished us to the corner of a parking garage. We feel incredibly betrayed.”

Approximately 20,000 National Guardsmen were brought into the nation’s capital ahead of Biden’s inauguration amid heightened threats of violence following the rioting that occurred at the Capitol two weeks earlier as Congress sought to certify the former vice president’s electoral victory. Five people, including a U.S. Capitol Police officer, died because of that attack.