http://www.usnews.com/education/arti...reaks?PageNr=1
This article discusses the regional agreements that can reduce tuition for students if they go to public schools in the region. There are only a few states that opt out (Florida, Texas, NC, NY, NJ, PA), and the District of Columbia. The Midwest program appears to be very lenient in that you don't have to be in a specific major to take advantage of it.
DC schools are great--and I'm also suggesting Emory and Stanford.