Earlier this week, a group of prominent Republicans called for a nationwide price on carbon to reduce greenhouse-gas emissions and slow climate change. It’s a proposal we should all be talking about, but we know Congress won’t – at least not before 2018 -because while these elder statesmen of the Republican party were floating the paper, their juvenile progeny in the Senate were voting to let US oil companies pay bribes overseas and stifling any mention of the $20 billion per year in subsidies and tax breaks that the US gives the fossil-fuel sector.