US Constitution (Bill of Rights) vs US Patriot Act
Amendment IV: The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
US Patriot Act: Freedom from unreasonable searches: The government may search and seize Americans' papers and effects without probable cause to assist terror investigation.
Amendment VI: In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the state and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation; to be confronted with the witnesses against him; to have compulsory process for obtaining witnesses in his favor, and to have the assistance of counsel for his defense.
US Patriot Act: Right to a speedy and public trial: The government may jail Americans indefinitely without a trial.
Amendment I: 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.
US Patriot Act: Freedom of association: To assist terror investigation, the government may monitor religious and political institutions without suspecting criminal activity.
Amendment VI: ... to have compulsory process for obtaining witnesses in his favor, and to have the assistance of counsel for his defense.
US Patriot Act: Right to legal representation: The government may monitor conversations between attorneys and clients in federal prisons and deny lawyers to Americans accused of crimes.
Amendment I: Congress shall make no law ... abridging the freedom of speech ...
US Patriot Act: Freedom of speech: The government may prosecute librarians or keepers of any other records if they tell anyone the government subpoenaed information related to a terror investigation.
Amendment VI: ... to be confronted with the witnesses against him ...
US Patriot Act: Right to liberty: Americans may be jailed without being charged or being able to confront witnesses against them. US citizens (labeled "unlawful combatants") have been held incommunicado and refused attorneys.
Constitutional Source: Cornell Law School
Patriot Act Source: The Associated Press, Knight-Ridder Newspapers
Full Patriot Act Text: US Bureau of Citizenship and Immigration Services