means they don't reject it outright like BO normally does with other issues. However, three of the four are in states that have increased oil/gas production and revenues so they can express their 'openess' and yet still oppose it when it comes down to it. (They, I believe, are also in states that the Keystone pipeline would be coming thru) I suspect that, just like with Obamacare and other votes that Dems took, some are being 'allowed' to vote a certain way knowing that their vote wouldn't be needed to pass or deny a bill anyhow.
Some thought the only obstacle to getting things done was Obama.
Gas tax, infrastructure funding puts some daylight between GOP House, Senate leaders
Falling gasoline prices have sparked congressional debate about increasing the federal gas tax to help fund upcoming infrastructure projects and have set up a potential disagreement among House and Senate Republicans.
"When the Democrats had total control of the Congress they couldn't find the votes," he told reporters. "It's doubtful the votes are here to raise the gas tax again. ... I've never voted to raise the gas tax. We'll have to work our way through it."
But at least four Senate Republicans -- Bob Corker, Tenn.; James Inhofe, Okla.; Orrin Hatch, Utah; and John Thune, S.D. -- appear open to the idea of increasing the tax.