there are a bunch of short summer programs/conferences/event-y things for students in DC and other places around the country. Many of them cover all expenses except air travel. You should check them out. Here's a collected list; in some cases the links are not totally up to date, so if there's a broken link make certain to go back to the core URL and look for updated information. These are good opportunities and can help make your resume stand out.
http://del.icio.us/upspolitics/summerprograms
