One of the main reasons why a sanction against the use of chemical or biological weapons be part of the Geneva conventions is because these types of weapons proved to be extremely terrible and torturous in warfare, and no country wanted their citizens exposed to such weapons. <span><span> </span></span>
The U.S Constitution is declared the most powerful and lawful document of them all, exceeding other document laws. We abide by it by using it as confirmation to any other law. The US Constitution created the 3 branches of government as well. Hope this helps <3