Once hot-selling Barack Obama souvenirs are marked down to remainder-table prices at a drugstore near the Kenwood home he owns but has barely visited since becoming president a year ago this week. That's not a reflection of disenchantment with Obama in his old South Side stomping grounds, but rather the sobering realities of time, distance and enormously elevated responsibilities. "He's president of the United States, not mayor of Chicago," said Peter Flemister, a retired attorney at a diner in Hyde Park the other day. "He's got a financial crisis, wars in Iraq and Afghanistan, health care. I'd rather he stay...