Which federal agency is responsible for regulating pesticide registration in the U.S.?

The Environmental Protection Agency (EPA) is the federal agency tasked with regulating pesticide registration in the United States. This includes evaluating the safety and efficacy of pesticides before they can be sold or distributed in the market. The EPA's role is crucial to ensure that pesticides do not pose unreasonable risks to human health or the environment, and it is responsible for enforcing compliance with federal laws governing pesticide use.

The FDA primarily oversees food safety and pharmaceuticals, which does not include pesticide registration. The USDA focuses on agricultural policies and food production but does not handle pesticide regulation directly. While the CDC works on public health issues, including the health impacts of pesticides, it does not have the regulatory authority that the EPA has concerning pesticide registration. This clear delineation of roles demonstrates why the EPA is the appropriate answer to the question regarding pesticide regulation.