The police power of the states can extend to interstate business.
Step-by-step explanation:
The 10th amendment to the Constitution in the USA grants States "not reserved to the United States" privileges and responsibilities. This allows States authority to create and enact laws that protect the protection, defense and safety of the people.
The States are interpreted as bound by their terms, and as substantive denials of the right to interfere with the internal activity of the separate States, with the exception, in reality, of any other authority specifically granted or obtained as required and effective means of implementing it.
The Senate had held that any person engaging in interstate commerce liable to "all" employees, including those who has intrastate operations alone, in spite to negligence-related accidents, without clear dependence on the tenth amendment, in the workers ' liability cases. The court ruled that this act has not been unconstitutional.