From the CPSC:
The CPSC is a member of the Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM), and as such, supports the development and use of validated alternative test methods. The Commission’s policy is to find alternatives to animal testing and to reduce the number of animals tested and decrease the pain and suffering associated with testing of household products in animals. As such, the Commission strongly supports the use of scientifically validated alternatives to animal testing and the use of existing information, including expert opinion, prior human experience, and prior animal testing results, in the determination of hazard.
Under the Federal Hazardous Substances Act (FHSA), animal testing is not mandatory; it is one possible option that can be used to determine the biological response and appropriate cautionary labeling for a consumer product.