Republicans were forced to "back down" from blocking Wall Street reform, according to a fundraising letter sent by the president. In the e-mail to his supporters, President Barack Obama wrote that pressure on lawmakers forced Republicans to "back down" from blocking the legislation, which the Senate passed Thursday. "This movement proved again that the strongest special interests, who for so long have called the shots in Washington, can be beat," he wrote. "When opponents in Congress tried to block the legislation altogether, you stood up -- and they backed down. When the lobbyists pushed for loopholes and exemptions just before...