Congress this past weekend approved a fiscal year 2005 omnibus spending bill that zeroes out funding for two Energy Department studies aimed at modifying existing nuclear weapons and exploring new warhead designs. "This is the biggest victory that arms control advocates in Congress have had since 1992, when we were able to place limits on nuclear testing," Rep. Edward Markey (D-MA), co-chairman of the Bipartisan Task Force on Nonproliferation, said in a statement yesterday. The Bush administration sought $27.6 million...