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.

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...

Proposed Carbon Tax: So. Many. Questions.

Last week, CalChamber’s tax and privacy guru Sarah Boot wrote about her surprise that a California legislator would introduce a “carbon tax” bill that...

Governor Newsom’s Appointments Demonstrate Leadership on Environment – Capitol Insider

Governor Newsom has appointed to his executive team a bevy of experts well versed in climate change and environmental policy from an educational, think...
Capitol Insider

Avoiding the Blame Game: California Should Focus on the Facts

Like its ambitious climate change goals, California can be a leader and should rise above the fray and show the nation by sound policy—not...
Capitol Insider

California Air Resources Board Considers Amendments to Cap-and-Trade Regulations

California made good on its promise to establish a nation-leading market for carbon emissions when a bipartisan vote of the Legislature passed the cap-and-trade...
Capitol Insider

When Thinking Globally, Policymakers Should Remember Local Impacts

On September 12-14, 2018, the Global Climate Action Summit will convene in San Francisco, following Governor Brown’s 2017 announcement in advance of the United...

Job Killer Increasing California Energy Costs in Committee Today

The Senate Rules Committee today will consider the newest job killer bill identified by the California Chamber of Commerce. AB 893 (E. Garcia; D-Coachella)...
Capitol Insider

A Change in Climate

On June 27, as I board a plane in Sacramento for a long overdue reunion with some of my favorite Hoosier jurists after my...

Senate Committee OKs First Step Toward Reliable Regional Energy Grid

A California Chamber of Commerce-supported bill that will promote energy efficiency and grid reliability won approval from a Senate policy committee this week. AB 813 (Holden;...

CalChamber-Opposed Bill Will Increase Energy Costs

Legislation that will lead to increased energy costs has passed the Senate, is under consideration in the Assembly and is opposed by the California...