In this May 19, 2008, file photo Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., is hugged by her husband, former President Bill Clinton as he introduces her during a campaign rally in Louisville, Ky. When Clinton finally exits the 2008 Democratic presidential race, she will end a decades-long, power-couple streak of unique political energy, savvy ideas, colossal policy flops and raw ambition. (AP Photo/Elise Amendola, File)AP - McCain criticizes Obama on Iraq, says they should visit war zone together … Looking toward fall, Obama signals he’ll fight for Western states that went to GOP in 2004 … A decades-long streak of high ambition is waning for the Clintons