Article 6 Clause 2 of the Constitution states what is considered the supreme law of the land. There is no mention Supreme Court precedents. This clause clearly states that the Constitution is the supreme law of the land and no laws whether federal or state can violate the constitution and be legally binding.
A notice of hearing is a legal document used in U.S. courts to inform individuals that the government is pursuing a an action against them. It is different than a notice of trial, which is used when individual parties are suing each other. These documents are reserved for actions in which the government is seeking redress from individuals.
Your disability claim will be heard in a private, closed-hearing office setting called the Office of Disability Adjudication and Review (ODAR), and as such you should expect to be in attendance at your hearing. You can expect to have plenty of notice, about 20 days, prior to your hearing date.