Guardian: One summer morning when he had been out of a job for 17 months, Kelvin Jacobs turned on the television to watch Barack Obama touring the factory that once belonged to his former company. It was a strange experience. By the time of Obama’s visit in August 2009, Jacobs had spent three months in a homeless shelter. Around him, Elkhart county was in economic freefall. His old company, which made RVs – "recreational vehicles", or mobile homes – like just about every other factory …