A day after Sen. Norm Coleman implicated a member of Parliament in a U.N. oil-for-food scheme, the British legislator shot back Thursday in a cross-Atlantic exchange of words. The legislator, George Galloway, likened Coleman to the late U.S. Sen. Joseph McCarthy, a characterization that sets the scene for a televised confrontation on Capitol Hill Tuesday, one that could further raise the Minnesota Republican's profile. Coleman already has gained international attention for calling on U.N. Secretary-General Kofi Annan to resign as a result of the oil-for-food scandal. The latest showdown began Wednesday when the Senate's permanent subcommittee on investigations, which Coleman...