President Obama is up in Michigan to wrap up a three-day tour to promote his economic agenda. He’s at the University of Michigan in Ann Arbor to unveil a plan on tackling the rising costs of college and making it more affordable. Secretary of State Hillary Clinton says she plans to step down if President Obama is re-elected in 2012. She told State Department staffers that two decades of service is enough and that she’d stay on just long enough to have a replacement named.