During the presidency of Theodore Roosevelt, how did the US government protect businesses?

The gold standard hurts every worker in the United States.

He had the government sue harmful trusts under the Sherman Antitrust Act of 1890.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.