Which of the following is a limitation imposed on states under FIFRA §24?

The limitation imposed on states under FIFRA §24 that indicates they cannot have weaker standards than the EPA is based on the principle of federalism where federal regulations set a minimum standard for pesticide regulation. This ensures a uniform baseline of safety and efficacy for pesticide use across the country.

The federal government, represented by the Environmental Protection Agency (EPA), establishes these standards, which states must adhere to, preserving a coherent regulatory framework. If states were allowed to implement weaker standards, it could lead to scenarios where pesticide use poses a greater risk to public health and the environment in those jurisdictions. The enforcement of stronger state standards is permissible, but they cannot undermine the federal standards established for protection.

Other options present scenarios that could be interpreted differently under the law. For instance, while states do have roles in pesticide registration processes, they must align with federal decisions, but they also retain authority in certain areas, allowing for some flexibility.