The Federal Reserve Board is hiring  Research Assistant (RA) positions.

  http://www.federalreserve.gov/careers/ra_research.htm.  

Our positions are highly competitive; each year we hire approximately 20-30 recent undergraduates as RAs.  While at the Board, RAs work on a broad range of topics and have the opportunity to increase their quantitative skills by working on both real-world policy issues and high-level research projects.  After their time at the Board, many of our RAs move on to top graduate school programs.

Additionally,  we offer summer internships for economics, mathematics, and finance students to work on advanced research projects with Board economists.

http://www.federalreserve.gov/careers/intern_research.htm#ProjIntern