It depends on the weather. The SCOTUS oftentimes invents its own “Oral Law” when it suits the liberal establishment they seek to serve. For example, nothing written in the Constitution remotely says or even implies abortion must be legal. (This is, but, one example of many available.) Nevertheless, when the left-wing “Justices” decided they wanted such a law, despite their not being elected to Congress which is constitutionally empowered to write laws, they simply decreed it by dreaming it up as Oral Law.
Justice Antonin Scalia warned about all this when he insisted upon strict constructionism, ruling based on the Constitution’s original meaning, rather than a so-called notion of an “everchanging Constitution” that allows every leftist judge to rule whatever he wants based on his feelings of what he dreams the Constitution should mean today, not what the authors of the Constitution (and statues, for that matter) intended when writing the laws.