Check The Excesses

In our Constitution ... the judiciary is a coequal branch of government, separate from the others, with the authority to interpret the Constitution as law and strike down, obviously, acts of Congress or acts of the president.

And that innovation doesn't work if ... the judiciary is not independent.  Its job is to obviously decide cases, but in the course of that, check the excesses of Congress or the executive, and that does require a degree of independence.

-- Supreme Court Chief Justice John Roberts speaking at the 125th anniversary celebration of the U.S. District Court for the Western District of New York in Buffalo (7 May 2025)