Which president is known for the "trust buster" moniker due to his antitrust policies?

The president known for the "trust buster" moniker due to his antitrust policies is Theodore Roosevelt. During his tenure from 1901 to 1909, he took significant actions to combat monopolies and promote competition within the economy. Roosevelt believed that large corporations, or "trusts," could stifle competition and harm consumers. He famously used the Sherman Antitrust Act to initiate lawsuits against several large corporations, including the Northern Securities Company, which was a major railroad trust. His administration aimed to regulate big business practices that threatened the public interest, and he took a strong stance against businesses that abused their power. This commitment to breaking up monopolies and enforcing antitrust laws earned him the nickname "trust buster," highlighting his role in promoting fair competition in the marketplace.

The other presidents mentioned did engage in various economic policies, but they did not have the same level of focus on antitrust actions as Theodore Roosevelt. William Howard Taft continued some antitrust efforts initiated by Roosevelt, but he did not earn the "trust buster" nickname. Franklin D. Roosevelt and Herbert Hoover also prioritized economic reform and regulation, but their focus was different and not centered on aggressive antitrust actions in the same iconic manner as Theodore Roosevelt.