President Trump’s 2016 campaign chairman posed a “grave counterintelligence threat” due to his interaction with people close to the Kremlin, according to a bipartisan Senate report released Tuesday that also found extensive contacts between key campaign advisers and officials affiliated with Moscow’s government and intelligence services.

The Senate Intelligence Committee report states that former Trump campaign manager Paul Manafort worked with a Russian intelligence officer “on narratives that sought to undermine evidence that Russia interfered in the 2016 U.S. election,” including the idea that Ukrainian election interference was of greater concern.

The report states that a Russian attorney who met with Manafort, the president’s son, Donald Trump Jr., and his son-in-law Jared Kushner at Trump Tower in 2016 had “significant connections” to the Kremlin. The information she offered to them was also “part of a broader influence operation targeting the United States that was coordinated, at least in part with elements of the Russian government,” the report states.

But the panel also found that the FBI’s handling of Russian threats to the election were “flawed,” and that the FBI gave “unjustified credence” to other allegations regarding Trump’s Russia ties that were made in a dossier compiled by former British spy Christopher Steele, “based on an incomplete understanding of Steele’s past reporting record.”

The Senate Intelligence Committee’s three and a half year investigation stands as Congress’s only bipartisan examination of Russian interference in the 2016 election. But the panel’s leaders were noticeably divided along party lines in how they interpreted the significance of the report — particularly concerning Trump’s Russia contacts — a sign that their tome will likely not put to rest the political fights over its substance.

“We can say, without any hesitation, that the Committee found absolutely no evidence that then-candidate Donald Trump or his campaign colluded with the Russian government to meddle in the 2016 election,” acting chairman Sen. Marco Rubio (R-Fla.) said in a statement Tuesday morning, though the acknowledged the “what the Committee did find however is very troubling” and included “irrefutable evidence of Russian meddling.”…