On December 5, 2025, the National Highway Traffic Safety Administration (NHTSA) published a proposed rule to weaken its Corporate Average Fuel Economy (CAFE) Standards for Model Years 2022 to 2031 Passenger Cars and Light Trucks, referred to as the Safer Affordable Fuel-Efficient Vehicles Rule III or SAFE Rule III. The […]
Daniel J. Metzger
12 posts
Local governments are leaders in the fight against climate change: they reduce community-wide greenhouse gas emissions, promote renewable energy resources, and otherwise advance climate mitigation and adaptation goals. But even as many local governments have already demonstrated their capability to tackle the climate crisis, state governments can hinder those efforts […]
Since 2016, presidents and their administrations have increasingly drawn lawsuits arguing that they are overstepping their authority. In these ultra vires claims, litigants contend that presidential actions—including, for example, executive orders, proclamations, or memoranda, as well actions by executive agencies done at the President’s behest—exceed the scope of the authority […]
Earlier this month, on June 2, 2025, Atlanta’s City Council unanimously passed a state-of-the-art ordinance to require cool roofs throughout the whole city, immediately propelling Atlanta to the forefront of local climate adaptation measures. The new requirements will help make Atlanta cooler, improve its air quality, and lower residents’ energy […]
This post is the first of a new Climate Law Blog series, 100 Days of Trump 2.0, in which the Sabin Center offers reflections on the first hundred days of President Trump’s second term across a variety of climate-related topics. To read other posts from the series, which will roll […]
Texas’ Third Court of Appeals will hear arguments tomorrow, April 23, 2025, in a case that cuts to the core of how state and local governments coexist. In Texas v. City of Houston, City of San Antonio, and City of El Paso, a group of Texas cities is challenging one […]
On his first day in office President Trump axed the Biden-era federal Buy Clean program. Buy Clean was designed to leverage the federal government’s buying power to help grow the low carbon building materials industry. Killing it will have consequences—buildings are responsible for a major share of global carbon dioxide […]
Cities have a unique and significant role to play in responding to climate change. Many are already doing so by adopting legal and policy tools to encourage the use of smart surfaces—a group of technologies and design strategies that mitigate the effects of climate change in urban environments, especially extreme […]