The Americans vs. Poisonous Pesticides Act would amend federal pesticide law to allow states to pursue legal claims against pesticide manufacturers for failure to warn about health or environmental risks, even if the product received federal approval. Currently, federal pesticide regulations can preempt state lawsuits, preventing consumers from suing under state law when they believe a pesticide's label is misleading or incomplete. This bill would preserve state residents' right to sue if pesticide manufacturers fail to disclose information about potential harms that manufacturers or the EPA become aware of after approval. The legislation also allows manufacturers to voluntarily update pesticide labels without waiting for federal approval when new health or safety information emerges, though the EPA can still disapprove such changes. The bill would apply to all pending and future lawsuits, regardless of when the underlying harm occurred.