The proposal comes as Senate Democrats introduced their version of a climate bill imposing federal limits on greenhouse gases. The measure would cut emissions 20 percent from 2005 levels over the next decade. It would also allow polluters to swap emissions credits under a program identical to “cap and trade.” Appearing with co-sponsor Senator Barbara Boxer, Senate Foreign Relations chair John Kerry said addressing global warming is essential to US security.

Sen. John Kerry: “Washington is used to letting big oil and special interests stand between us and the goals of everyday citizens. And after the last few months, we know what’s coming. People will say we can’t afford to act. But you know the truth. You know it, all of you. And we know the truth, those of us standing here. And those who serve in the military know the truth, which is why they’re here today. The truth is our security and our economy will both be strengthened, and we can’t afford not to act.”