The U.S. Supreme Court is poised to decide whether to hear cases that could have significant implications for the ability of states to regulate activities beyond their borders, particularly concerning climate change policies. Legal experts highlight that if states like California and Honolulu are allowed to penalize companies for emissions from oil produced in Texas and burned in China, it could set a precedent for expansive state authority over interstate and international commerce. This situation raises concerns about the separation of powers and the potential for states to utilize their courts to influence national climate policy. The Wall Street Journal has published analyses emphasizing the constitutional principle that states cannot regulate activities outside their borders, a principle that is being challenged by several states pursuing climate-related regulations.