Final answer:
The Animal Welfare Act (AWA) is the act that establishes that licensees have an IACUC. The AWA requires researchers to register their use of animals and mandates the establishment of an IACUC to review proposed animal research experiments.
Step-by-step explanation:
The act that establishes that licensees have an IACUC (Institute of Animal Care and Use Committee) is the Animal Welfare Act (AWA). This act was passed by Congress in 1966 and has been amended several times. It requires researchers to register their use of animals and mandates the establishment of an IACUC to review proposed animal research experiments. The IACUC is responsible for ensuring that basic standards are met, the use of animals is justified, the research is not duplicated, and pain and discomfort for the animals are minimized.