"The bill has strong bipartisan support from the committee's "Big Four": Chairman Barbara Boxer, D-Calif., Sen. James Inhofe, R-Okla., the ranking member, Sen. Max Baucus, D-Mont., and Sen. David Vitter, R-La., the chairman and ranking member of the highway subcommittee."
From D.C. Streetsblog: Expect Two (Radically Different) Reauthorization Proposals Soon:
"It costs $12 billion more than the Highway Trust Fund will bring in, meaning the Finance Committee will need to find a way to pay for that overage. (According to the CBO, the trust fund is projected to bring in $85.5 billion in 2012 and 2013, so that would mean a $97 billion bill.)"
Key to the Boxer bill is the fact that Sen. Baucus chair's the Senate Finance Committee that will be tasked with finding the $12 billion that is unfunded in the EPW bill.
The Senate bill would have to be reconciled with the expected six-year House Transportation Committee bill under the leadership of John Mica (R- FL.)
Thanks to Streetsblog New York City