The federal courts get their power from the people
Answer:
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Given the harsh uncertainties of our young nation, the phrase “insure domestic tranquility” was our founders' commitment to preserve civil peace so that everyone could live their lives without fear of social strife. Yet domestic tranquility literally means “peace at home” – not just in our streets, but in our homes.
Limits the amount of power each branch in the government can obtain because the biggest fear of the United States was the fear of someone or a group gaining too much power.