A 3-meter sea level rise would have devastating consequences for U.S. coastal regions. Major cities, including New York City, Miami, and San Diego, could experience chronic flooding or partial submersion. Critical infrastructure, such as airports, highways, and stadiums, would be at risk, with Newark Liberty International Airport and MetLife Stadium among the vulnerable sites. Low-lying communities in Florida, Louisiana, and Texas could become uninhabitable, displacing thousands of residents. Additionally, natural reserves and wildlife habitats, such as the California Coastal National Monument, would face significant ecological damage. The economic and social costs of such flooding would be immense, affecting millions of people and billions of dollars in property.