"Senate Republicans' push for a vote on approval of the delayed $7 billion Keystone XL oil pipeline project gained momentum on Tuesday after Democrats failed to end debate on a major transportation bill.
Fifty-two senators, most of them Democrats, voted to move forward on the $160 billion highway bill without a proposed Republican amendment to authorize construction of the Canada-to-Texas pipeline, eight votes short of the 60 needed to end debate.
The defeat gave Republicans a new opening to attack President Barack Obama for rejecting TransCanada Corp's project, as soaring gasoline prices become a top issue for voters ahead of the November presidential election.
A vote on Keystone faces an uphill battle in the Senate but would likely turn the highway bill into a battle over gasoline prices and job creation."
David Lawder and Roberta Rampton report for Reuters March 7, 2012. 
"Democrats Look To Add Natural Gas Subsidies To Transportation Bill" (Huffington Post)
"Inhofe Pushing Transportation Bill Despite Hefty Price Tag" (Tulsa World)
"Long-term Transportation Bill Faces Detours" (Politico)
"OVERNIGHT MONEY: Transportation Bill Tries To Get a Restart" (On The Money/The Hill)