Many Republicans were in a celebratory mood Tuesday night following President Donald Trump's big speech in front of a joint session of Congress, but some may have enjoyed themselves a bit too much.

Hayden Haynes, the chief of staff for House Speaker Mike Johnson (R-LA), was arrested late Tuesday night by U.S. Capitol Police and faces a charge of driving under the influence of alcohol, Reuters reported.

The arrest occurred after Haynes allegedly hit a parked car with his own vehicle near the U.S. Capitol building just hours after Trump's speech concluded.

Arrested and charged with DUI

NBC News was the first to report, based on tips from unnamed law enforcement sources, that Speaker Johnson's Chief of Staff Haynes had been arrested Tuesday night for suspected drunk driving.

That tip was later confirmed by a USCP spokesperson who told the outlet, "A driver backed into a parked vehicle last night around 11:40 p.m. We responded and arrested them for DUI."

Haynes was not taken to jail following the arrest but rather was released with a citation to appear in court on an unknown date. Interestingly, rather than face prosecution by the U.S. attorney for D.C., as most crimes in the capital city are, Haynes' alleged DUI will be handled by D.C. Attorney General Brian L. Schwalb.

Johnson stands in support of arrested staffer

NBC News also reached out to Speaker Johnson's office about the DUI arrest and received confirmation that it had indeed occurred.

"The Speaker is aware of the encounter that occurred last night involving his Chief of Staff and the Capitol Police," a spokesperson for Johnson said. "The Speaker has known and worked closely with Hayden for nearly a decade and trusted him to serve as his Chief of Staff for his entire tenure in Congress."

"Because of this and Hayden’s esteemed reputation among Members and staff alike, the Speaker has full faith and confidence in Hayden’s ability to lead the Speaker’s office," the spokesperson added.

The outlet noted that Haynes has been Johnson's chief of staff since he became the speaker in October 2023 and previously filled the same role for the Louisiana congressman since he first entered office in 2017.

Before that, Haynes served as a staffer in various positions for former Sen. David Vitter (R-LA) from 2009 to 2016.

Drinking to celebrate Trump or to forget Democrat shenanigans

As reported, the DUI arrest for Haynes occurred just a few hours after President Trump completed his Joint Address to Congress on Tuesday evening, which arguably provided multiple reasons for anybody to consume alcohol in the aftermath.

Indeed, the top staffer for the House speaker could have been celebrating the litany of accomplishments that Trump rattled off during his speech or honoring some of the many esteemed guests who'd been highlighted by the president and others for various pertinent reasons.

That said, he also could have been drinking away the absurd shenanigans and constant disruptions by miserable Democrats who largely refused to applaud or support anything that might make Trump look good -- including a child with brain cancer or the families of victims of crimes that were directly related to Democratic policies, among other decidedly non-controversial and non-political guests and achievements.