Answer these Questions

3.(a) What power in the United States Constitution has been used by Congress for at least the last 50 years to significantly change the way in which (a) employers are allowed to treat employees and customers and (b) sellers of goods are restricted in the way they are allowed to sell and advertise products.

(b)Assume Congress has passed two statutes.The first requires all sellers of Coffee in the USA to put warning labels on coffee products explaining the danger of too much caffeine.The second demands that all public high schools offer a required course in "diversity" training.The State of Iowa objects to these laws and says the laws willnot apply in Iowa.Under the "supremacy" clause, will these laws apply in Iowa. Explain why or why not.