The Embassy of France has an extensive internship and assistantship program for US students.  They find the positions, accept applications, administer paperwork, and do problem-solving.  You are strongly encouraged to apply.  See Dept advisor for discussion after consulting site below.
http://www.ambafrance-us.org/culture/education/index.html

Internships are also adviertised for students at Career Center Website.
http://www.careercenter.umd.edu/student/intern/intern_main.htm