Name one power that the national government has gained?

One power that the national government has gained is the ability to regulate interstate commerce. This authority, derived from the Commerce Clause in the U.S. Constitution, has expanded the federal government's role in economic activities across state lines, allowing it to implement regulations that affect trade, transportation, and communication. Over the years, this power has been interpreted broadly, enabling the national government to address various issues, including labor standards and environmental protections.