WASHINGTON — Two senior Secret Service agents were “more likely than not” impaired by alcohol when they drove a government vehicle through a secure area at the White House earlier this year, a government watchdog concluded in a report released late Wednesday.

Homeland Security Inspector General John Roth found that Marc Connolly and George Ogilvie spent about five hours at a bar during and after a retirement party for a colleague and ran up a “significant” bar tab before driving to the White House on March 4. Their tab included eight glasses of scotch, two vodka drinks, three beers and a glass of wine.