This letter is a response to Governor Newsom’s September 22, 2025, letter to U. S. Environmental Protection Agency (EPA) Administrator Lee Zeldin (https://www.gov.ca.gov/wp-content/uploads/2025/09/GGN-Engangerment-Finding-Letter.pdf) and CARB’s September 22, 2025, summary of submissions to EPA and the Department of Energy (https://ww2.arb.ca.gov/news/carb-submits-scathing-critique-u-s-epas-illegal-effort-overturn-endangerment-finding) that defend the 2009 EPA Endangerment Finding. You claim that “greenhouse gases endanger public health and welfare,” that “climate-warming gases are killing people,” and that there is a “climate crisis” in California and the United States. The written comments submitted to the EPA on September 19, 2025 (https://co2coalition.org/publications/co2-coalition-comment-on-epa-endangerment-finding/) and September 22, 2025 (https://co2coalition.org/publications/co2-coalition-comment-2-on-epa-endangerment-finding/). Air quality in California keeps getting better: The major air pollutants are at their lowest levels ever and they are not killing any Californians. In conclusion: There is NO climate crisis in California, and CO 2 is essential and beneficial for life on Earth.