President Donald Trump recently revoked California's ability to enforce its nation-leading clean-car rules. But how much is California to blame and what recourse does it have? POLITICO’s Debra Kahn breaks down what happened, how a former top California official is responding, and what’s next in this saga. Plus, the Trump administration proposed its first biofuel blending mandates on Friday, increasing volumes over the next two years to record levels, but leaving open questions over exemptions from the mandates sought by small refiners.

Debra Kahn is the editor of POLITICO's California Climate newsletter and author of Currents, a reported column about the energy, environment and climate debates.

Nirmal Mulaikal is the co-host and producer of POLITICO Energy. 

Alex Keeney is a senior audio producer at POLITICO. 

Gloria Gonzalez is the deputy energy editor for POLITICO. 

Matt Daily is the energy editor for POLITICO.

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