Sen. Lindsey Graham (R-S.C.) on Sunday expressed concern over the president’s penchant for shrugging off Moscow’s interference in the 2016 presidential election. “I’m concerned when the president tweets, you know, Russia denies they meddled in our election,” Graham said on NBC’s Meet the Press. “We’ve armed the Ukraine, we’ve imposed sanctions, we’ve kicked out diplomats, but the idea that Russia did not meddle in our election is fake news. They did meddle in our election and they’re doing it again in 2018,” he said. Graham went on to say he’s pleased that Trump is “going to confront Putin” at the two leaders’ upcoming meeting in Helsinki. His remarks come after Trump once again floated the idea Russia had no involvement in election meddling on Twitter, saying on Thursday that Moscow “continues to say they had nothing to do” with it. Despite lawmakers framing his sit-down with Putin as a way to confront the Russian leader, Trump has refused to rule out lifting sanctions after the pair’s summit.