Here's the summary for the wikipedia article you mentioned in your comment:
Criminal copyright laws prohibit the unacknowledged use of another's intellectual property for the purpose of financial gain. Violation of these laws can lead to fines and jail time. Criminal copyright laws have been a part of U.S. laws since 1897, which added a misdemeanor penalty for unlawful performances if "willful and for profit". Criminal penalties were greatly expanded in the latter half of the twentieth century, and those found guilty of criminal copyright infringement may now be imprisoned for decades and fined hundreds of thousands of dollars. Criminal penalties, in general, require that the offender knew that he or she was committing a crime, while civil copyright infringement is a strict liability offense, and offenders can be "innocent" (of intent to infringe), as well as an "ordinary" infringer or a "willful" infringer.
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Here's the summary for the wikipedia article you mentioned in your comment:
The Copyright Clause (also known as the Intellectual Property Clause, Copyright and Patent Clause, or the Progress Clause) describes an enumerated power listed in the United States Constitution (Article I, Section 8, Clause 8). The clause, which is the basis of copyright and patent laws in the United States, states that: [the United States Congress shall have power] To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
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