The state leads the nation in greenhouse gas production. And chief among the bill's critics is Gov. Rick Perry, who has been railing loudly against the measure that would slash air pollution linked to global warming.
He says it would cripple the state's economy and the heavy-polluting oil, gas and chemical industries it depends on. Perry plans to keep up his campaign against legislation he claims would lead to massive job cuts, industries fleeing overseas and more expensive energy.
Environmental groups and Texans who support the bill say Perry is ignoring the economic benefits in order to help the polluters who support him.