By David Morgan, Pete Schroeder and Lindsay Dunsmuir (Reuters) -Republican senators moved on Tuesday to block a vote on President Joe Biden’s five nominees to the Federal Reserve, including the reappointment of Jerome Powell as chair, over objections to Sarah Bloom Raskin, the White House’s pick to be the central bank’s Wall Street regulator. “I do not think the Committee should proceed with a vote on Ms. Raskin,” said Senator Pat Toomey, the top Republican on the Senate Banking Committee, citing what he said were unanswered questions about her past role on the board of a fintech company. Sena…