Scumbag Conservatives: "The Constitution is all the law we need!" Against progressive changes to the law.
It's not all the law we need, but it is the basis for law. The Constitution is law. All laws are subordinate to it. This is the compact we made as a nation. If progressive changes are desired, there's a way to do that: get two thirds of Congress to agree with you and 75% of state legislatures.
Trying to get around the Constitution's limits just destroys respect for the law. If the Constitution isn't binding, then no laws are binding.