A survey of legislation passed by the 113th Congress by VoteTocracy says it missed being least productive, although not by much.
The organization, which describes itself as" a nonpartisan, political information resource and engagement platform", says 296 bills were enacted, although some involved relatively minor things like renaming post offices or VA medical centers. To see a list of the major accomplishments, click here.
The distinction of being the least productive still belongs to its predecessor, the 112th Congress. So in other words, people who have been in Congress for the last two years have relatively little to brag about.