Fianna Fáil TD Malcolm Byrne was arrested on May 28 on suspicion of drunk driving, with a subsequent urine test revealing an alcohol level of 156 milligrams per 100 milliliters of urine. This reading is nearly two and a half times the legal limit of 67 milligrams per 100 milliliters. Byrne, 52, was stopped by gardaí at a checkpoint at 5 a.m. while en route to Dublin Airport.

Byrne has publicly apologized for his actions and stated he will "face up to whatever happens." He is scheduled to appear in court on November 2. According to legislation, drivers with a first offense of this alcohol level could face a two-year driving ban, a fine of up to €5,000, or six months in prison, or a combination thereof.

The revelation comes amidst increasing public and political pressure for road safety, particularly following recent high-profile fatal crashes. The father of a teenager killed in a separate incident, Frankie McCann, whose daughter Kiea died in a crash in July 2023, called for Byrne to step down, stating, "He [Byrne] should have been dismissed and barred from it [Dáil] altogether." McCann added, "Politicians are getting off with slaps on the wrists."

Byrne resigned from his position as chair of the Oireachtas Committee on Artificial Intelligence following his arrest but has retained the Fianna Fáil parliamentary party whip. This situation draws parallels with another Fianna Fáil TD, Michael Cahill, who was convicted of dangerous driving and banned for two years. Cahill, however, retained his party whip and was later promoted to a committee position.

Senior figures within Fine Gael have expressed dismay over the behavior of Fianna Fáil TDs on the roads, with one minister suggesting that both Byrne and Cahill would have immediately lost their party whips in Fine Gael. The Taoiseach, Micheál Martin, faces mounting pressure regarding his handling of such incidents, with some government colleagues viewing his perceived reluctance to take stronger action as a sign of weakened leadership. Concerns have been raised that this could erode government authority, especially as public anxiety about road safety grows.

Road Safety Minister Seán Canney recently convened a meeting with senior officials to discuss enhancing road safety measures, including the potential use of AI and upgraded camera systems for early detection of wrong-way drivers. Canney had previously stated that Fianna Fáil TDs committing serious traffic offenses set a "very bad example."

Both Tánaiste Simon Harris and Fianna Fáil deputy leader Jack Chambers have publicly condemned drink driving. Chambers described Byrne's actions as "unacceptable" but noted the case must proceed through the justice system.

Following his release by gardaí, Byrne reportedly informed the Fianna Fáil leadership, including a direct conversation with the Taoiseach. He has continued to attend public events and issue press releases. Byrne stated on local radio after his arrest that "Drink driving is wrong, full stop."