WASHINGTON, DC - MAY 20: U.S. Sen. Carl Levin (D-MI) (L), Chairman of the Senate Investigations Subcommittee, and U.S. Sen. John McCain (R-AZ) speak to reporters during a briefing on Capitol Hill, May 20, 2013 in Washington, DC. The briefing was held in advance of Tuesday's hearing on offshore profit shifting and the United States tax code.
