Rep. Adam Schiff (Calif.), the top Democrat on the House Intelligence Committee, said Monday that "after much consideration," he believes committee Chairman Devin Nunes (R-Calif.) should recuse himself from further involvement in the Russia investigation. Schiff said he based this conclusion on Nunes admitting he went to the White House to meet with a source who told him about the incidental collection of communications from members of President Trump's transition team. Nunes, who has shared what he learned with Trump but not his committee, was also a member of the transition team. "I believe the public cannot have the necessary confidence that matters involving the president's campaign or transition team can be objectively investigated or overseen by the chairman," Schiff said. House Democratic Leader Nancy Pelosi (Calif.) said Nunes has "tarnished" his office, and House Speaker Paul Ryan (R-Wis.) "must insist" Nunes recuse himself. Nunes told reporters on Monday night he won't step down, adding, "Everything is politics here."