Why was the supreme court case united states v. lopez important?

The government asserted that the law was related to interstate commerce because guns in school led to gun violence. ... U.S. v. Lopez is a particularly significant case because it marked the first time in half a century that the Court held Congress had overstepped its power under the Commerce Clause.

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."