Warren in Washington

Warren used climate change as an example of the corruption she said is endemic to Washington, D.C.

A generation ago, Republicans and Democrats both sought to address climate change. President George H.W. Bush, a Republican, signed the United Nations’ first treaty on climate change and got it ratified by Congress.

But, she said, years of massive spending by oil companies and the Koch brothers on climate-denying experts gave Republican politicians an “umbrella they can hide under” so they can feign ignorance on the topic.