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Story by Reuters

And a similar bill in the Senate faces an uncertain future because backers need the support of several Democrats to ensure its passage.

Ahead of the vote, Representative Fred Upton, a Michigan Republican and the chairman of the House Energy and Commerce Committee, cited studies that say freeing exports may lower gasoline prices. He said eliminating the ban would help allies in Europe dependent on Russia for much of their crude.

The domestic oil boom of the last six years has “flipped the script” on the need for the trade restriction, Upton said.

Congress passed the ban after the 1973 Arab oil embargo led to fears of petroleum shortages.

But thanks to fracking, horizontal drilling and other advanced techniques, the United States now vies with Russia and Saudi Arabia for the spot of the world’s top oil producer.

Democrats who voted against the bill said they were concerned about the environmental consequences of increased domestic oil drilling and the possible loss of jobs at refineries and in shipbuilding.

Frank Pallone, the top Democrat on the panel, said the bill was “completely unnecessary” because Obama already has the authority to remove restrictions on crude oil exports.

In addition, several Democrats said they worried the measure would give U.S. officials the power to weaken the nearly 100-year-old Jones Act, a law that requires the use of U.S.-flagged and crewed ships on shipments between domestic ports, or to prohibit the closure of a port for national security reasons.

The only amendment to the bill the panel adopted was offered by Representative Gene Green of Texas, one of three Democrats who supported the bill. It allows the president to halt exports when it is not in the country’s best interest, and was seen as an effort to gain more Democratic support for the bill, including Obama’s.

Kevin Book, energy policy analyst at ClearView Energy Partners, put the chances of the bill’s passage this year by Congress at 15 percent, due to increased partisanship, and a narrow window of opportunity ahead of the 2016 elections.