The oath of office requires upholding the Constitution. The Constitution and the laws are never to be interpreted. The case is interpreted, not the Constitution. The Constitution was written so that an 18th century farmer could understand it. There is no excuse for a supreme court justice to not understand it. The Constitution is to be applied to the case, not interpreted.
The job description requires someone who will be honest in keeping their own politics out of their decisions. Their job is to apply the Constitution’s standards to the case, not give out a personal opinion or preference.
A justice MUST be honest. Saying “on means off” or “dead means alive” is not acceptable. The reward for such behavior needs to be immediate impeachment.
When some justices are called “conservative”, “originalist” or “strict constructionist” that merely acknowledges that they are honest and NOT chiselers to some degree. That is because their oath requires them to uphold the Constitution, not change it or pretend it changed itself.
Liberal, leftist or adherents of a “living constitution” are by definition NOT honest, because they are not upholding the actual Constitution. A constitution is a contract just like a mortgage contract. How far do you think you would get pretending your home mortgage is living and breathing?
The States created the Constitution. The Constitution created the federal government. Any power not given to the federal government in the Constitution does not exist. You can pretend along with some politicians that it exists, but it does NOT exist. The Constitution can be changed by 4/5 of the States with amendments.
All lower laws must comply with higher laws. All laws must comply with the Constitution. No law can be deemed or proclaimed by a politician. They must be passed by Congress and legislatures.
A judge at any governmental level MUST be honest. Judges must interpret a case by the Constitution and other applicable lower laws, no other way.