Palestinians, a lawyer being unable to teach IRA members about international law, and peace workers being unable to offer training in effective peace negotiations or how to petition the United Nations regarding human rights abuses. Another group, the Humanitarian Law Project, also objected to the provision prohibiting "expert advise and assistance" to terrorists and filed a suit against the U.S. government to have it declared unconstitutional. In 2004 a Federal District Court struck the provision down as unconstitutionally vague, but in 2010 the Supreme Court reversed that decision. Perhaps one of the biggest controversies involved the use of National Security Letters (NSLs) by the FBI. Because they allow the FBI to search telephone, email, and financial records without a court order, they were criticized by many parties, including the American Civil Liberties Union. Although FBI officials have a series of internal "checks and balances" that must be met before the issue of an NSL, Federal Judge Victor Marrero ruled the NSL provisions unconstitutional. In November 2005, BusinessWeek reported that the FBI had issued tens of thousands of NSLs and had obtained one million financial, credit, employment, and in some cases, health records from the customers of targeted Las Vegas businesses. Selected businesses included casinos, storage warehouses and car rental agencies. An anonymous Justice official claimed that such requests were permitted under section 505 of the USA PATRIOT Act and despite the volume of requests insisted "We are not inclined to ask courts to endorse fishing expeditions". Before this was revealed, however, the ACLU challenged the constitutionality of NSLs in court. In April 2004, they filed suit against the government on behalf of an unknown internet service provider who had been issued an NSL, for reasons unknown. In ACLU v. DoJ, the ACLU argued that the NSL violated the First and Fourth Amendments of the U.S. Constitution because the USA PATRIOT Act failed to spell out any legal process whereby a telephone or Internet company could try to oppose an NSL subpoena in court. The court agreed, and found that because the recipient of the subpoena could not challenge it in court it was unconstitutional. Congress later tried to remedy this in a reauthorization Act, but because they did not remove the non-disclosure provision a Federal court again found NSLs to be unconstitutional because they prevented courts from engaging in meaningful judicial review. Another provision of the USA PATRIOT Act has