Voters should care about this bill because it addresses the significant environmental impact of the international shipping industry. Marine shipping is a major source of greenhouse gas emissions, contributing to climate change, and also releases other pollutants that degrade air quality, especially in areas around ports where many people live. This bill establishes a mandatory system for collecting comprehensive data on these emissions, which currently isn't systematically gathered.

If this bill becomes law, the EPA will have a clearer picture of the pollution generated by ships operating in U.S. waters and making U.S. calls. This data is crucial for understanding the problem and could form the basis for future regulations, incentives, or fees aimed at promoting cleaner shipping practices and improving public health. If it doesn't pass, this specific, detailed data collection mechanism for international maritime pollution would not be established, potentially slowing efforts to address shipping-related environmental issues.