st stop, a walking tour of a destroyed neighborhood. A memorial service later was punctuating a day of remembrance and toil as authorities pressed on with the tasks of poking through wreckage and identifying the dead. Obama returned Saturday from a six-day European tour of Ireland, Britain, France and Poland. After days of focusing on the U.S. relationship with the rest of the world, he turned to an even more critical connection: his own, with the American people.  He was visiting survivors and the bereaved from the worst tornado in decades, in what has racked up to be the deadliest tornado season in more than 50 years. As Air Force One swept over the landscape, flattened houses and stripped trees offered a massive swath of brown. Looking around the neighborhood by foot, Obama eyed boarded-up windows, damaged business signs, fallen trees, piles of debris and homes spray-painted with "God Bless Everyone"  With dozens still missing, homes marked with an X meant they had been searched already for missing loved ones.  Speaking to the press after his tour, Obama said the "scene speaks for itself." He pledged that the tragedy isn't just one for the community, but one the nation will share. "And there will be a national response," he said.  Sunday's task aid not just for the volume of procedures they crank out, but whether people are actually getting healthier and getting better," Pawlenty told The Des Moines Register. He also told ABC's "This Morning" that he would support Ryan's proposal to privatize Medicare if his only choices were Ryan's plan or doing nothing. Pawlenty, who launched his bid for the Republican presidential nomination last week in Des Moines, had stops planned later in the day in Boone and Fort Dodge. He is scheduled to visit Sioux City on Tuesday and Council Bluffs on Wednesday. Former Louisiana Gov. Buddy Roemer, considered to be another possible GOP presidential hopeful, joined Pawlenty at the Waukee event, laying out a detailed plan to create jobs by overhauling the nation's trade, energy and tax policies. He said America is addicted to Middle Eastern oil, corporations that don't back taxes and special interests that have cost the nation jobs. "We've stood by and let our best jobs go to China and Mexico," he said. "We are a nati