@coctaanatis@mstdn.social
Yes, it's in the basic notion of the US federal government being comprised of three coequal branches.
Should the legislative branch be able to pass laws constraining the the Court or the executive branch be able to act against the Court then they would be above the judicial branch in violation of that fundamental design, violating judicial independence.
So yep, the impeachment power is provided as the solution here, the way to remove a justice personally without violating the firewall between branches of government.
If a justice is not worth impeaching then the whole thing is null in the first place.