How did Theodore Roosevelt regulate the growth of trusts?

He enforced the Sherman Antitrust Act.

He signed the Clayton Antitrust Act into law.

He hoped to provide bad trusts with a square deal.

Roosevelt, a Progressive reformer, earned a reputation as a "trust buster" through his regulatory reforms and anti-trust prosecutions ... His "Square Deal" included regulation of railroad rates and pure foods and drugs; he saw it as a fair deal for both the average citizen and the businessmen.