Why was the Supreme Court’s decision in the Wabash, St. Louis, and Pacific Railroad v. Illinois case an obstacle to state government reform measures?

In Wabash v. Illinois (1886), the Supreme Court ruled that states could not regulate railroad rates for travel or shipping across state lines because interstate commerce was under federal authority. This limited state reform efforts to control railroad practices, so the correct choice is “The Supreme Court ruled that states cannot regulate interstate railroads.”

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