President Obama has again acknowledged the necessity of doing something many Democrats fiercely oppose -- reforming entitlement programs, such as Medicare and Social Security. On a Midwest bus tour stop in Minnesota, Obama spoke in favor of changes to entitlement programs being eyed by the 12-member congressional committee charged with finding budget savings that will get past partisan gridlock, stave off future credit downgrades and increase the federal debt. "There have been times when our side, when Democrats aren’t always as flexible as we need to be," Obama said. "Sometimes I do get frustrated when I hear folks say, 'You...