Browner: Climate bill needs trade protections for manufacturers

“We certainly recognize that for certain manufacturing sectors – that generally get referred to as energy-intensive, trade-sensitive – there are going to have to be mechanisms that recognize the fact that they compete in a global market,” Browner said. “There are a number of ideas that have been put on the table.”

Protections including carbon tariffs – or “border adjustments” – and free emissions allowances are vital to senators from manufacturing-heavy states such as Sherrod BrownSherrod BrownSanders aide dismisses challenging Kaine VP spot Union group backs GOP Sen. Portman in Ohio race Clinton looks to expand electoral map MORE (D-Ohio) and Debbie StabenowDebbie StabenowDems to GOP: Admit Trump is 'unfit' to be president Senate Dems push Obama for more Iran transparency GMO labeling bill good for both environment and the poor MORE (D-Mich.).

Brown, Stabenow and eight other Democrats laid out their demands in a letter to the architects of upcoming Senate climate legislation – Sens. John KerryJohn KerryDefense chief casts doubt on cooperation with Russia in Syria Five decades of Democratic convention memories Three strategies to help Clinton build 'Team of Teams' MORE (D-Mass.), Lindsey GrahamLindsey GrahamSyria activists cheer Kaine pick Vulnerable GOP senators praise Kaine Meghan McCain: ‘I no longer recognize my party’ MORE (R-S.C.) and Joe Lieberman (I-Conn.) – last week.

Kerry, Graham and Lieberman plan to unveil their long-awaited climate and energy bill April 26.