Leaders of the Senate Intelligence Committee said Wednesday appeared to concur with the intelligence community’s assessment that Russia interfered in the 2016 presidential election, and did so to help then-candidate Donald Trump.

“Committee staff have spent 14 months reviewing the sources, tradecraft, and analytic work, and we see no reason to dispute the conclusions,” said Committee Chairman Richard Burr, R-N.C. “There is no doubt that Russia undertook an unprecedented effort to interfere with our 2016 elections.”