Here is (apparently because it is hard to find specifics) The ACLU’s main beef with the patriot act. I will address this in individual posts.
Reform the Patriot Act A Primer:
1) SEARCH YOUR HOME AND NOT EVEN TELL YOU. The USA Patriot Act expands law enforcement’s ability to conduct secret “sneak and peek” searches of your home. Investigators can enter your home or office, take pictures and seize items without informing you that a warrant was issued, for an indefinite period of time. (SECTION 213)
2) COLLECT INFORMATION ABOUT WHAT BOOKS YOU READ, WHAT YOU STUDY, YOUR PURCHASES AND YOUR MEDICAL HISTORY. The USA Patriot Act gives law enforcement broad access to any types of records ” medical, financial, gun, library, educational, sales, etc. ” without probable cause of a crime. It also prohibits the holders of this information, like librarians, from disclosing that they have produced such records, under threat of imprisonment. The court orders are issued by a secret intelligence court in Washington and judges have little power to deny applications. (SECTION 215)
3) SEIZE A WIDE VARIETY OF BUSINESS AND FINANCIAL RECORDS, and in certain instances access the membership lists of organizations that provide even very limited Internet services (message boards on your church website for instance) using national security letters, or NSLs, which are issued at the sole discretion of the Justice Department. The Patriot Act expanded access to these NSLs, which also impose a blanket gag order on recipients and are not subject to judicial review. (SECTION 505)
4) READ PARTS OF YOUR E-MAILS AND MONITOR WHAT YOU LOOK AT ON-LINE. The Patriot Act lets the government get records that could show the subject lines of your e-mails and details about your Web surfing habits (like your recent research on Google), all without probable cause. (SECTION 216)