Republicans are split over the PROVE It Act, a modest bipartisan bill set for markup today in the Senate that would authorize a two-year study into how carbon emissions of U.S. manufactured goods compare to allies and adversaries. POLITICO’s Josh Siegel breaks down the details of the bill and how it’s exposing larger divisions among Republicans over how to integrate climate into trade policy. Plus, the Supreme Court’s conservative majority seems poised to weaken the power of federal agencies after Wednesday’s oral arguments in the Chevron deference case.    For more news on energy and the environment, subscribe to Power Switch, our free evening newsletter: https://www.politico.com/power-switch And for even deeper coverage and analysis, read our Morning Energy newsletter by subscribing to POLITICO Pro:  https://subscriber.politicopro.com/newsletter-archive/morning-energy   Josh Siegel is an energy reporter for POLITICO.  Catherine Morehouse is an energy reporter for POLITICO.  Nirmal Mulaikal is a POLITICO audio host-producer.  Annie Rees is a senior audio producer-host at POLITICO.  Gloria Gonzalez is the deputy energy editor for POLITICO.  Matt Daily is the energy editor for POLITICO. Learn more about your ad choices. Visit megaphone.fm/adchoices