Many of the regional banks have also said that their deposit base has stabilized. "The regional banks have come under pressure because they are less equipped to handle a withdrawal of deposits the way the big banks are," said Mark Chandler, chief market strategist at Bannockburn Global Forex in New York. In a move of solidarity, most of the major banks agreed on Thursday to deposit $30 billion in First Republic. At least four U.S. lawmakers said on Sunday they would consider whether a higher federal insurance limit on bank deposits than the current $250,000 threshold was needed to inspire more confidence in the system. Buffett has yet to prop up any of the regional banks.

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