WASHINGTON (Reuters) - The top Democrat on the House of Representatives intelligence committee said on Thursday the chamber’s investigation into Russian meddling in the U.S. election needs to go forward despite whatever obstacles it may face. “One way or another, the investigation has to take place,” Representative Adam Schiff told reporters. “We’re carrying on.” Schiff, who on Monday called the panel’s Republican chairman, Devin Nunes, to recuse himself, said it was up to House Speaker Paul Ryan and Nunes to decide who leads the probe, but that they would have to “articulate why and how they feel that can be done credibly.” 