I think the answer is the 10th Amendment
The constitutional convention was held in Philadelphia, Pennsylvania. The constitution is the Law of the land.
The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how the genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.
Congress would not ratify the salt ll treaty because Russian combat troops were found in Cuba and the Soviet union invaded Afghanistan