Law Career Advice Bleg

Any career advice for my 1L friend?

• He wants to become an AUSA after 2-4 years at a firm. "Political" firms are okay.
  
• He is interested in white collar defense and government investigations.
• He is a "a bleeding heart lefty albeit a somewhat moderate one."
• He doesn't want to work in NYC.
  

Which firms in D.C. would you recommend to my friend for 2L employment? What long-term path would be best for him to follow?