Carton company is the largest manufacturer of paper cartons used to hold half gallons and gallons of milk. plastic company dominates the plastic container market. again geared toward providing dairies and milk processors with containers in the half gallon and gallon sizes. competition is fierce between the two companies. one advantage of paper cartons is that they are more easily and more cheaply recycled. congress passed a law last month that assesses a five percent per. container tax on plastic containers. thr author of the bill stated a desire to encourage consumers to use more earth friendly containers. plastic company believes this action of Congress is unconstitutional. is plastic company correct? why?