Heads up Michigan Freepers. Why President Obama is betting big on battery plants in Michigan, Updated: Wednesday, July 14, 2010, 11:57 AM Rick Haglund . HOLLAND -- Michigan might seem to be the last place a beleaguered president looking for a positive economic bounce would visit. After all, the state is known for having the worst-performing economy in the U.S. during the past decade. And although Michigan no longer is tagged with the highest unemployment rate in the nation -- Nevada now holds that distinction -- joblessness here still stands at an unacceptable 13.6 percent. But President Barack Obama will...