WASHINGTON (AP) -- The Federal Reserve threatened to force the ouster of Bank of America CEO Kenneth Lewis if he didn't follow through with plans to buy Merrill Lynch & Co., Republicans said Wednesday after reviewing internal documents. Republicans also said there was evidence that the government tried to restrict information related to the merger from being publicly released. However, none of the documents showed that the government explicitly instructed Bank of America to hide Merrill Lynch's losses from shareholders, they said.