The USDA offers a variety of internship and summer employment programs for students in its many, many programs and agencies. If you have any interest in agricultural policy, farm programs, conservation, rural communities ... just to name a few, you may find something of interest here.
Internship information: http://www.dm.usda.gov/employ/sip/index.htm
Testimonial: not available
This internship is also listed under the following headings: