House Minority Leader Nancy Pelosi, D-Calif., is pressing House Speaker Paul Ryan, R-Wis., to continue the House Intelligence Committee’s Russia probe.

In a letter to Ryan, Pelosi noted that Democrats are "deeply concerned by the Majority's efforts to curtail the House Intelligence Committee investigation and its overall failure to address Russia's meddling in the 2016 election."

"Nothing less than America's democracy and national security are at stake, and therefore we must fully investigate Russia's assault on our election systems to prevent future foreign attacks," Pelosi wrote in a letter Thursday. "We expect that you will take urgent action to ensure this investigation can continue, and justice can be pursued, unhindered."

Pelosi’s letter comes after the ranking Democrat of the House Intelligence Committee, Adam Schiff of California, warned last week that Republicans would attempt to conclude the committee’s investigation of Russian meddling in the 2016 election and that the committee has yet to line up witnesses for 2018, when all House members face re-election.

Ryan has the authority to appoint members to the committee and could influence whether the investigation continues.

"The House Permanent Select Committee on Investigation is conducting a thorough and professional investigation into Russian meddling and is following the facts wherever they may lead,” AshLee Strong, a spokesperson for Ryan said earlier this week.