Four Senate Democrats broke ranks Thursday and voted to approve an amendment aimed at prohibiting a carbon tax. 

The Senate voted 58-42 on an amendment offered by Sen. Roy BluntRoy Dean BluntThe Hill's Whip List: Republicans try again on ObamaCare repeal Another health funding cliff puts care for millions at risk Top Senate Dem: We're going forward with understanding we can work with White House on DACA MORE (R-Mo.) that would set up a deficit-neutral reserve fund to prohibit a federal tax or fee on carbon emissions from any entity that, directly or indirectly, is a source of the emissions. 

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Red-state Democrats Sens. Joe Donnelly (Ind.), Heidi HeitkampMary (Heidi) Kathryn HeitkampWells Fargo chief defends bank's progress in tense Senate hearing Dems plan to make gun control an issue in Nevada Red-state Dems need more from Trump before tax embrace MORE (N.D.) Claire McCaskillClaire Conner McCaskillKoch-backed group targets red-state Dems on tax reform Overnight Cybersecurity: Equifax security employee left after breach | Lawmakers float bill to reform warrantless surveillance | Intel leaders keeping collusion probe open Las Vegas highlights Islamist terrorism is not America's greatest domestic threat MORE (Mo.) and Joe ManchinJoseph (Joe) ManchinOvernight Energy: EPA aims to work more closely with industry Overnight Finance: Lawmakers grill Equifax chief over hack | Wells Fargo CEO defends bank's progress | Trump jokes Puerto Rico threw budget 'out of whack' | Mortgage tax fight tests industry clout Lawmakers try again on miners’ pension bill MORE (W.Va.) voted with Republicans.
Blunt, ahead of the vote, suggested that the amendment was necessary to help protect Americans from higher utility bills and "send a clear message" to President Obama.
 
"This vote is important to send a clear message to the administration that Americans simply can't afford to pay higher utility bills because of bad energy policies," he said. 
 
But, Sen. Barbara BoxerBarbara BoxerTrump riles Dems with pick for powerful EPA job Pelosi's chief of staff stepping down Time is now to address infrastructure needs MORE (D-Calif.) suggested ahead of the vote that putting "a price" on carbon could lead to a better economy. 
 
"When you put a price on carbon it works," she said. "If you look at my state, we are creating jobs in clean energy, we're balancing our budget better than we ever have before. ... So I don't know why on earth we would say 'no' to something that leads to prosperity."