If it is not literally the least that Congress can do to encourage more bike commuting, it's close.
Reps. Joe Crowley (D-NY), Vice Chair of the Democratic Caucus, and Erik Paulsen (R-MN) announced the reintroduction of The Bike to Work Act (H.R. 4104), bipartisan legislation that would amend the Internal Revenue Code to allow workers to use their pre-tax commuter benefits for bike share programs, just as they already can for other forms of transportation.
Originally introduced in the 113th Congress, the bill will give commuters the option to pair bike share with other forms of transit, greatly expanding mobility and improving access to existing transit systems.
When the bike commuter benefit bill was being voted on, the CBO estimated it would cost $2 million in 2008 and $30 million over 10 years. I wonder if they've figured out how much it is actually costing and how many people are taking advantage of it.