The answer is the right to bear arms, as that right was not contemplated in the Constitutional text, but was added later by the Second Amendment.
The Second Amendment to the Constitution of the United States of America protects the right of the American people to possess and bear arms. Thus, the United States is one of the countries with the least limitations in acquiring and carrying firearms. It is part of the so-called Bill of Rights or United States Bill of Rights. The Supreme Court of the United States has made clear on numerous occasions the constitutional text has asserted that the right to bear arms is an individual right of all Americans, but has also stated that the right is not unlimited and does not prohibit regulation of production and purchase of firearms or similar devices. The Second Amendment establishes that neither the federal government of the United States nor the state and local governments can infringe the right to bear arms.
