(Reuters) - Federal Reserve Vice Chair Richard Clarida on Wednesday reiterated that the U.S. central bank won’t raise interest rates until inflation reaches 2%, and he expressed confidence that market participants believe in that promise, a key element in the Fed’s strategy. “We are not going to lift off until we get inflation at 2% for a year. ... We are trying to tie our hands. We are saying we are not going to hike until we get to 2%,” Clarida told a conference held by the Hoover Institution. “It actually doesn’t seem lacking credibility to markets that we are going to do that.”