Which agency enforces regulations regarding international trade and immigration?

The agency responsible for enforcing regulations regarding international trade and immigration is Customs and Border Protection (CBP). CBP plays a critical role in safeguarding the nation's borders by regulating the flow of goods and people between the United States and other countries. This includes enforcement of trade laws, collecting tariffs, preventing illegal immigration, and ensuring that all items entering the country comply with safety and legal standards.

As part of its operations, CBP screens individuals at ports of entry, processes international travelers, and inspects cargo for compliance with various regulations. This multifaceted approach helps facilitate legitimate trade and travel while maintaining national security and protecting American interests.

The other agencies listed have specific functions that do not directly encompass both international trade and immigration enforcement. For example, the Drug Enforcement Administration primarily focuses on combating drug trafficking and enforcing controlled substances laws. The Federal Aviation Administration regulates civil aviation and doesn't address trade or immigration. Centers for Disease Control and Prevention deals with public health matters, such as disease prevention and control, rather than trade and immigration regulations.