Final Answer:
Interstate commerce falls under the federal government's authority to regulate trade activities crossing state lines, as granted by the Commerce Clause in the U.S. Constitution.
Step-by-step explanation:
Interstate commerce refers to trade or business activities that involve the movement of goods, services, or money across state lines within a country. The Constitution of the United States grants the federal government the authority to regulate interstate commerce under the Commerce Clause, found in Article I, Section 8. This clause has been a cornerstone in shaping the scope of federal regulatory power, allowing Congress to oversee and regulate trade activities that cross state boundaries.
The rationale behind giving the federal government this authority was to prevent economic barriers between states and ensure a uniform and fair system of trade. By regulating interstate commerce, the federal government can address issues such as trade barriers, monopolies, and unfair business practices that may arise between states. Over the years, the interpretation of the Commerce Clause has expanded, empowering the federal government to regulate various aspects of interstate commerce, from transportation and communication to the sale of goods and services. This broad authority provides the foundation for federal agencies to enact and enforce laws that govern trade activities occurring across state lines, contributing to the overall economic stability and cohesion of the nation.