Theodore Roosevelt, who served as the 26th President of the United States from 1901 to 1909, had complex beliefs about big business. He believed that big businesses, particularly monopolies, had too much power and needed to be regulated in order to protect the public's interest. He also believed that big businesses had a responsibility to be good corporate citizens and to act in the best interest of the community.
During his presidency, Roosevelt acted on these beliefs by using the power of the federal government to break up monopolies and trusts, which were large corporations that controlled a significant portion of a particular industry. He also pushed for the passage of the Hepburn Act in 1906, which gave the Interstate Commerce Commission (ICC) more power to regulate railroad rates and to prevent monopolies from forming.
Additionally, he supported the Clayton Antitrust Act of 1914, which strengthened existing antitrust laws and helped to further break up monopolies. He also used the power of the presidency to mediate labor disputes, and to push for workplace safety and labor protections.
In summary, Theodore Roosevelt believed that big business had too much power and needed to be regulated in order to protect the public's interest, he acted on this belief by using the power of the federal government to break up monopolies, increase regulation and promote fair competition, as well as pushing for workplace safety and labor protections.