Which law requires federal registration of pesticides shipped in interstate commerce?

The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) is the law that mandates federal registration of pesticides that are shipped in interstate commerce. This act was established to ensure that pesticides are evaluated for their effectiveness, safety, and environmental impact before they can be sold or distributed.

FIFRA requires that all pesticide products must be registered with the Environmental Protection Agency (EPA) before they can be legally marketed. This registration process includes an assessment of the pesticide's labeling, effectiveness in controlling targeted pests, potential risks to humans and the environment, and compliance with specific manufacturing practices. This regulatory framework is crucial for ensuring that pesticides do not pose unreasonable risks to people or the environment.

In contrast, the other options focus on different aspects of pesticide regulation or related issues. The Food Quality Protection Act addresses the safety of pesticide residues in food, the Pesticide Registration Improvement Act centers on improving the pesticide registration process but does not itself mandate registration, and the Cooperative Federalism Act is not specifically concerned with pesticides at all. Thus, the Federal Insecticide, Fungicide, and Rodenticide Act remains the fundamental law ensuring the safe registration of pesticides in interstate commerce.