Interstate Commerce Act
Granger laws were made to regulate trains and the railroad, but in 1886 Surpreme Court ruled that the granger laws were unconstitutional.
In 1887 The Interstate Commerce Act gave the federal government the right to supervise railroad activity through a 5 member Interstate Commerce Comission (ICC)
The ICC was not powerful enough, especially after supreme court ruled that the ICC could not set a max rate. The ICC only got power in 1906 when President Roosevelt came into office