Leah Silverthorn

Leah Silverthorn
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Leah B. Silverthorn joined the CalChamber policy team in May 2018 as a policy advocate specializing in climate change, air quality, energy, environmental justice, and transportation and infrastructure issues. She brings to the CalChamber more than decade of legal experience in environmental, energy, and land use matters. Immediately before coming to CalChamber, she was the principal owner of Silverthorn Legal, based in Seattle, Washington. She focused on environmental litigation, contaminated property redevelopment, and environmental cost recovery and defense. She is an honors graduate of Indiana University-Bloomington, with a B.S. in public affairs and environmental management. She earned her J.D., with honors, at the Indiana University McKinney School of Law, where she was articles editor for the Indiana International and Comparative Law Review and a member of the Moot Court Board. See full bio.

Twenty Minutes at Two: A Capitol Experiment

Remember back in December, when I wrote that life in the capitol was stressful and recommended meditation as a tool? Never could I have...

Legislature Should Reject Changes to Cap and Trade that Would Increase Price Without Emissions...

The Legislature is considering today a substantial and harmful change to the cap-and-trade market a mere 18 months after the Air Resources Board completed...

Over 100 Environmental Groups, CalEPA, and Industry Ask Agencies to Postpone or Substantially Extend...

A collection of industry and environmental organizations are urging federal and California agencies to extend or postpone public comment deadlines on a variety of...

Environmental, Industry Groups Call for Suspending Public Comment Deadlines on Pending Regulations

A collection of industry and environmental organizations are urging federal and California agencies to extend or suspend public comment deadlines on a variety of...

Legislative Analyst to California: Rely More on the Most Cost-Effective GHG Reduction Strategies

The Legislative Analyst’s Office (LAO), the California Legislature’s non-partisan fiscal and policy advisor, released its annual report on California’s climate policies, recommending that “n...

CalChamber Intervenes in First in the World Effort to Mandate Zero-Emission Private Commercial Trucks

The California Air Resources Board (CARB) recently heard a proposed rule that will require a steep ramp up in creation and deployment of zero-emission...

Hack Your Brain – Capitol Insider

Ever feel like you’re being pulled in a million directions? That’s definitely life in the capitol. But I have some good news: it doesn’t...

Governor Vetoes Bill Inhibiting Direct Democracy

Governor Gavin Newsom this week vetoed a California Chamber of Commerce-opposed bill that would have hindered Californians’ ability to use the direct democracy tools...

Governor Signs CalChamber-Backed Bill on Greenhouse Gas Reduction Fund

Governor Gavin Newsom has signed a California Chamber of Commerce-supported bill that will improve accessibility of Greenhouse Gas Fund-eligible projects. The bill, AB 1237 (Aguiar-Curry;...

Governor Signs CalChamber-Sponsored Bill Helping Small Businesses

A California Chamber of Commerce-sponsored bill to help protect businesses from predatory lawsuits has been signed into law by Governor Gavin Newsom.
Capitol Insider

Not Subject to Air Resources Board Jurisdiction? You Will be Very Soon

Do you get deliveries to your business? I expect you do. Under a new rule being considered by the California Air Resources Board (CARB),...

State Air Resources Board Drops Expansion of Emissions Reporting to Small Businesses

In response to objections raised by the California Chamber of Commerce and other business groups, the California Air Resources Board (CARB) has dropped—for now—its...

Governor Signs Wildfire Safety and Accountability Legislation

With 2018 standing as the deadliest and most destructive wildfire season on record in California, wildfire safety and accountability legislation passed both houses of...

Governor Newsom’s Wildfire Bill Passed by Legislature – Capitol Insider

Governor Newsom is following through on one of his first priorities—the passage of a bill to deal with costs associated with massive, expensive, and...

CalChamber Objects to Massive Expansion of Air Emissions Reporting Mandate

No Public Hearing Set as Proposed Rule Now Encompasses Small Businesses Small businesses, including many without in-house air specialists, may soon be required to report...
Capitol Insider

Righting the Ship – Part Two

In my last post, we looked at SB 44 (Skinner; D-Berkeley) and how it went from Job Killer status to a support position from...
Capitol Insider

Righting the Ship: From Job Killer to Support

Legislators recently took aim at diesel trucks with a series of bills that would impact the cost of goods across California. Billed as “Ditching...

Amendments Put Balance in Former Job Killer Bill

Legislation that began as a targeted mandate increasing transportation costs has been amended at the urging of the California Chamber of Commerce and its...

CalChamber Outlines Subjects for Carbon-Based Sales Tax Study

A California Chamber of Commerce-opposed-unless-amended bill that will increase costs and place regulatory burdens on businesses passed the Senate Environmental Quality Committee this week. SB 43...

Carbon-Based Sales Tax Study Bill to Be Considered in Senate Committee

A California Chamber of Commerce-opposed-unless-amended bill that will increase costs and place regulatory burdens on businesses is scheduled to be heard in the Senate...