Article I, Section 8, Clause 8 in the U.S. Constitution also called the Intellectual Property Clause states:
"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."
This Clause which states what the Congress can do was changed and pretty much abolished by the 1st Amendment, as it states "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof;or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.".
The First Amendment changed this Clause which gave the Congress this power because now "Congress shall make no law... abridging the freedom of speech, or of the press".
The Amendments were of course made after the clauses of the Constitution, and this Amendment cancels out the Copyright part of this Clause but the Clause is still enacted to protect Inventors.
This Clause is what the Congress is reading right now and the Congress just can't see that they can't make Copyright Laws as it infringes our 1st Amendment.
They are wanting to make the Unconstitutional Copyright Laws even more easier to break and make it so that if someone on a website Breaks the Unconstitutional Copyright Laws then they will shut the whole entire website down, without even a warrant. This bill breaks the 4th Amendment.
This bill is the "Stop Online Piracy Act" (SOPA); which is way worse than the Protect IP Act, as it is way more strict and will destroy the Internet; and this is coming from the mouths of the creators of the Internet.