Final answer:
It is indeed illegal to sell chewing tobacco to a minor under the age of 21 in the United States. Retailers must check identification to verify age before selling age-restricted products such as tobacco.
Step-by-step explanation:
The question revolves around the legality of selling chewing tobacco to a minor. In the United States, it is illegal to sell tobacco products, including chewing tobacco, to anyone under the age of 21. This federal regulation is enforced by the Food and Drug Administration (FDA). If you believe the person attempting to purchase chewing tobacco is a minor, you are correct to refuse the sale. Retailers should always check identification to verify the age of the purchaser before completing a sale of age-restricted products. By refusing to sell tobacco products to a minor, you are not only upholding the law but also protecting the health of young individuals.