Why did the framers of the constitution want Supreme Court Justices appointed for life?

The idea of appointing judges for life is inspired by the wish of assuring the independence of courts and judges, freeing them from political pressures or any personal pressures from other branches of power, be it the executive branch or the legislative branch.   This should allow them to do their job with freedom and professionalism.

Explanation:

4 copper and gold, the california gold rush is why im pretty sure.

a) "how old man winter was driven back " and "ormuzd and arimanes"

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