Russian President Vladimir Putin "is not deterred,” said Connecticut Rep. Jim Himes, a Democratic member of the House Intelligence Committee.
Senior Trump administration officials have been eager to focus more on China in discussing election interference, asserting that Beijing is the more potent danger.
Trump's stance on Russian interference, including publicly questioning intelligence agencies' assessment at a Helsinki news conference with Putin, has colored his relationship with spy chiefs.
Also Thursday, the Trump administration Justice Department charged a Russian national in a plot to sow discord in the U.S.
Himes, the House Intelligence Committee member, said he was concerned heading into the Nov. 3 election about intelligence being twisted for political reasons.