Democratic fund-raising group for Congress candidates confirms hack

By Dustin Volz and Emily Stephenson WASHINGTON (Reuters) - A committee that raises money for Democratic candidates for the U.S. House of Representatives confirmed on Friday it had been hacked in an intrusion possibly linked to Russian hackers, similar to an earlier breach targeting another Democratic Party group. In an incident that escalated concerns about the potential for Russian meddling in U.S. politics, Reuters first reported on Thursday that the U.S. Federal Bureau of Investigation is pro