How valuable of an ally will John McCain be to Barack Obama? According to The New York Times, "Over the last three months, Mr. Obama has quietly consulted Mr. McCain about many of the new administration's potential nominees to top national security jobs and about other issues" in a courtship "that historians say has few modern parallels." Lindsey Graham has said of McCain that "that many of these appointments he would have made himself." When McCain returned from Iraq last month, Obama called him in order to hear his thoughts on the situation. And, tonight, McCain will be the guest of honor at a black tie celebration of Obama's inauguration.