The purpose of the Sherman Antitrust Act was it prohibited any contract, trust, or conspiracy to a foreign trade.
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Um the legislative is what i feel like is the answer hopefully i helped
President Truman had the CIA train over 3000 Cuban exiles to overthrow Castro. Before the invasion, Kennedy took over office and approved it. The invasion failed miserably. In under 90 hours, over 2000 of the exiles were captured and the rest were killed. Kennedy denied to give them air support because he didn't want any US soldiers involved because it would start a war with Cuba and possibly provoke the Soviet Union. President Kennedy had the captured exiles released for a price of food and resources.
(Not related just helpful. can't not is a double negative. "I can't not leave'' means I can leave)
The biggest reason is probably we can even travel to Mars. Mars is only one planet away from us. the distance is to far for fuel and time. we would need to go much faster and a lot less fuel just to get to Mars.