Federal Deposit and Insurance Corporation (FDIC) Chairman Sheila Bair addresses the HOPE Global Financial Literacy Summit at a community center in Washington June 17, 2009.  REUTERS/Jonathan Ernst    (UNITED STATES POLITICS BUSINESS HEADSHOT) By Karey Wutkowski

WASHINGTON (Reuters) – U.S. bank regulators are expected to propose Tuesday that banks prepay three years of regular assessments to replenish the dwindling deposit insurance fund, according to a source familiar with the matter.