WASHINGTON -- U.S. Rep. Marsha Blackburn, R-Tenn., has called for the House Financial Services Committee to investigate Bank of America's practice of extending credit through secured credit cards sometimes used by undocumented workers. "As a member of the Financial Services committee, I believe that thorough Congressional oversight is necessary to address this legal loophole, which allows banks to issue credit cards to those who are in this country illegally," Blackburn said in a statement Friday. "We must protect our country and financial institutions from the security, financial, and terrorist risks this poses," Blackburn said. The call for an investigation followed...