Though the president publicly doubts that Russia inflitrated the 2016 election, 12 Russian agents were indicted in the Mueller Investigation in July 2018.
During a press conference announcing the indictments, Rosenstein said "free and fair elections are hard fought and contentious, and there will always be adversaries who work to exacerbate domestic differences and try to confuse, divide and conquer us."
“So long as we are united in our commitment to the shared values enshrined in the Constitution, they will not succeed,” he added.