CHICAGO - Despite opposition from congressional Republicans, the Obama administration is signaling that a state prison in rural Thomson, Ill., will probably become the new home for scores of terrorism suspects now housed at the U.S. naval base at Guantanamo Bay, Cuba. Officials from the White House, Defense Department and U.S. Bureau of Prisons spent two hours last week briefing more than a dozen members of the Illinois delegation in the office of Senate Majority Whip Dick Durbin, D-Ill. To reassure skeptical Republicans, they emphasized security. Although the officials left open the possibility that another site could be chosen, participants...