The answer for the
blank space is <span>"Elastic" or "necessary and proper clause".</span><span>
</span><span>To make all Laws which should be important and appropriate
for conveying into Execution the enumerated powers, and every single other
Power vested by this Constitution in the Legislature of the United States is
mentioned in the elastic or necessary and proper clause</span>
The Secret classification level "shall be applied to information, the unauthorized disclosure of which reasonably could be expected to cause serious damage to the national security."
