Complex sentence: The Hepburn Act (59th Congress, Sess.1, ch.3591,, enacted June 29,1906) gave the Interstate Commerce Commission (ICC) the power to set maximum railroad rates which led to the discontinuation of free passes to loyal shippers.
Split into simpler sentences: The Hepburn Act is a 1906 United States federal law that gave the Interstate Commerce Commission (ICC) the power to set maximum railroad rates. This led to the discontinuation of free passes to loyal shippers.