Which agency has the responsibility of enforcing the Controlled Substances Act of 1970?

Answer
The correct answer is the Drug Enforcement Administration (DEA). **Explanation:** The Controlled Substances Act (CSA) was enacted in 1970 to regulate the manufacture, distribution, and dispensing of drugs that have a high potential for abuse. The enforcement of the CSA falls primarily under the jurisdiction of the Drug Enforcement Administration (DEA), which is a federal agency within the United States Department of Justice. The DEA's responsibilities include enforcing the controlled substances laws and regulations, conducting investigations and prosecutions related to the illegal trafficking of controlled substances, and coordinating with other agencies at the federal, state, and local levels to combat drug trafficking and abuse. The Food and Drug Administration (FDA) oversees the safety and efficacy of medications but does not have enforcement power over the distribution of controlled substances. The Federal Trade Commission (FTC) deals mainly with market competition and consumer protection, while the Consumer Product Safety Commission (CPSC) focuses on product safety, not drug enforcement. Therefore, the DEA is the agency specifically tasked with enforcing the CSA.