U.S. Attorney General Jeff Sessions was questioned last week by the special counsel\u2019s office investigating potential collusion between Russia and President Donald Trump\u2019s 2016 presidential campaign, the U.S. Justice Department said on Tuesday.\r\nThe interview marked the first time that Special Counsel Robert Mueller\u2019s office is known to have interviewed a member of Trump\u2019s Cabinet, and is another milestone in an investigation that has hung over Trump\u2019s year-old presidency.\r\nDiscussions between Trump\u2019s personal lawyers and Mueller\u2019s team have been under way about the possibility of an interview with Trump and what the scope of it might be, according to a person familiar with the talks.\r\nMueller\u2019s office also interviewed former Federal Bureau of Investigation Director James Comey shortly after Trump fired Comey in May 2017, a person familiar with the matter said. Comey\u2019s firing led to Mueller\u2019s appointment to take over the FBI\u2019s Russia investigation.\r\nSessions was the first U.S. senator to endorse Trump\u2019s candidacy and served as a campaign adviser before the Republican president appointed him as the top U.S. law enforcement official.\r\nTrump has openly criticized Sessions for recusing himself from overseeing the Russia probe last March after media reports that he had failed to disclose 2016 meetings with Moscow\u2019s then-ambassador, Sergei Kislyak.\r\n\u00a0\r\nIan Prior, a Justice Department spokesman, confirmed a report in the New York Times that Sessions met for hours with Mueller\u2019s team last week. Prior did not provide additional details. An attorney representing Sessions declined to comment.\r\nMueller\u2019s team is expected to be interested in meetings between Sessions and Kislyak during the campaign, as well as the attorney general\u2019s involvement in Trump\u2019s firing of Comey, an episode central to the question of whether Trump may have committed obstruction of justice.\r\nTrump shrugged off questions about Sessions\u2019 interview at the White House, telling reporters: \u201cI\u2018m not at all concerned.\u201d His spokeswoman Sarah Sanders declined comment on specific interviews but said the White House would not stand in the way of the probe.\r\n\u201cWe\u2019re going to be fully cooperative with the special counsel,\u201d Sanders told reporters. \u201cWe want to see this come to a complete and full conclusion.\u201d\r\nReuters.