US Constitution, 9th Amendment

The enumeration in the Constitution, of certain rights,
shall not be construed to deny or disparage others retained by the people.

9th Amendment can be applied to protect rights of people. Yet Supreme Court hasn't based any decisions on 9th Amendment, almost never mentions it. Expecting judicial branch to never apply 9th Amendment has allowed other branches to expand their powers while violating people's rights.

Judicial branch treats 9th Amendment as a pandora box, fearing the first decision based on it would open an infinite source of rights. Judicial branch prefers to deflect arguments about existence of other rights to legislative branch. Only effect it seems to have is to sometimes remind judicial branch of discipline of limited-government and balancing rights/powers.