Who had the legal power to determine whether a law is constitutional

The supreme court has the legal power to determine whether a law is constitutional.

Please correct me if I'm wrong :)

to answer this question you need to explain more

several states had passed similar laws, but they were limited to intrastate businesses. the sherman antitrust act was based on the constitutional power of congress to regulate interstate commerce.

you answered my friends question just to get the coins you didn't even give a valid response.