In 1887, Congress created the Interstate Commerce Commission, which was tasked with enforcing equal rates for all railroad freight, but by then Standard depended more on pipeline transport. More threatening to Standard's power was the Sherman Antitrust Act of 1890, originally used to control unions, but later central to the breakup of the Standard Oil trust. Ohio was especially vigorous in applying its state anti-trust laws, and finally forced a separation of Standard Oil of Ohio from the rest of the company in 1892, the first step in the dissolution of the trust.