In a nomination hearing before the U.S. Senate on Tuesday, U.S. Ambassador to Russia nominee Jon Huntsman said he was certain Moscow had interfered in the 2016 presidential elections.

Earlier this year, U.S. intelligence unanimously concluded Moscow undermined the U.S. electoral system to sway the outcome of U.S. elections last November in favor of President Donald Trump.

Huntsman, the former U.S. Ambassador to China under President Barack Obama, is expected to take over from sitting Ambassador John Tefft this month after being officially nominated by the White House on July 18.

In Moscow, he is widely known as a ‘hardliner,’ sent to Moscow at a time of souring relations between the two countries.

“There is no question that the Russian government interfered in the U.S. election last year,” Huntsman said in his testimony to the Foreign Relations committee, adding that the meddling had undermined trust between Moscow and Washington.