You may know this already, but DOL seems to make most entry-level hires through its honors program (info on last year's program is here: http://www.dol.gov/sol/jobs/honorsprogram.htm
). They don't appear to hire directly out of their internships, but having interned for them definitely seems to be an advantage for getting into the honors program (a lot of the hires have interned for DOL at some point in law school). Keep in mind, though, that for 2012 they got 1000+ applications for 8-12 hires. It's not clear how many people they hired for 2013. There's info about some of the 2010 and 2011 honors attorneys here: http://www.dol.gov/sol/jobs/05-2012_FRA ... GAZINE.pdf
(the article's mostly about what they do but it lists names, and you can google/linkedin stalk if you're as obsessive as I am).
Interning for the feds generally is helpful for showing commitment to public service, but there just aren't a lot of positions.
(I didn't intern for DOL, but applied for the honors program.)