What powers are reserved for the states according to the Constitution?

The powers reserved for the states according to the Constitution, as outlined in the Tenth Amendment, include responsibilities that are primarily local and concern the governance and welfare of the state's citizens. These powers enable states to establish their own systems and regulations that cater to their specific needs.

Managing police forces is a fundamental aspect of state authority, as it directly relates to maintaining law and order within the state. Similarly, states have the power to establish and govern their own educational systems, ensuring that schooling meets the local population's requirements. Social welfare programs are also managed at the state level, allowing them to address the unique social needs of their residents. Additionally, states are tasked with pollution control efforts, as environmental regulations often vary significantly from one state to another based on local ecological concerns.

The other options mention powers generally associated with the federal government, such as declaring war, negotiating treaties, and overseeing immigration, which states do not have the authority to regulate independently. This distinction emphasizes the separation of powers and responsibilities between state and federal governments, demonstrating the importance of local governance in the areas mentioned.