Juan Peron was the President of Argentina (The correct answer). Specifically, e was the president before and after his exile. The exile was caused by the military regime that was in power between those two presidencies.
The Sherman Antitrust act was created for that purpose, but it was also supported by the Clayton Antitrust Act which came later on. Roosevelt was known as "Teddy the Trust-Buster" for his strict enforcement of these acts.