According to the US Constitution, what is the minimum level of protection that must be extended to individuals regarding their rights?

The minimum level of protection that must be extended to individuals regarding their rights is referred to as "the floor." This concept indicates that the rights and protections outlined in the Constitution establish a baseline that cannot be lowered. It ensures that all individuals are guaranteed at least these minimum rights, while states and other jurisdictions can choose to provide more rights if they wish.

This principle is vital because it serves to protect fundamental civil liberties; it prevents any governmental action from infringing upon the basic rights that are inherent to all individuals. Thus, while additional rights can be granted or expanded, the Constitution mandates that every person should receive at least the protections specified within it.