It's in the U. S. Constitution! Article 1, Section 8, instructs Congress to "secure for limited times to authors and inventors the exclusive right to their respective writings and discoveries."
Copyright is a federal law that provides protection to creative and intellectual works.
Copyright gives the copyright holder (usually the creator), certain exclusive rights for a period of time.
Additional state laws, case law and judicial opinions also affect copyright protection.
Violations of copyright law can result in criminal or civil penalties. Xavier may also be compelled to sanction or penalize those who violate copyright law.