distinguished Hamdan from Hamdi (in which AUMF language was found to override the explicit language regarding detention in 18 U.S.C. § 4001(a)) in that Hamdan would require a "Repeal by implication" of the UCMJ. Authorizing statute The Bush administration held that AUMF enables warrantless surveillance because it is an authorizing statute. An Obama Department of Justice whitepaper interpreted FISA's "except as authorized by statute" clause to mean that Congress allowed for future legislative statute(s) to provide exceptions to the FISA warrant requirements and that the AUMF was such a statute. They further claimed that AUMF implicitly provided executive authority to authorize warrantless surveillance. This argument is based on AUMF language, specifically, the acknowledgment of the President's Constitutional authority contained in the preamble: and the language in the resolution; The Obama administration further claimed that Title II of the USA PATRIOT Act entitled Enhanced Surveillance Procedures also allowed the program, Obama stated that Americans' civil liberties were protected and that purely domestic wiretapping was conducted only pursuant to warrants. Because FISA authorizes the President to bypass the FISC only during the first 15 days of a war declared by Congress, the argument claimed the AUMF implicitly gave the President the necessary power (as would any Congressional declaration of war). However, as a declaration of war encompasses all military actions so declared, including any otherwise constrained by Congress, the administration held that FISA set a presumptive minimum, which might be extended (explicitly or implicitly) by a declaration. Corporate confidentiality analysis Corporate secrecy is also an issue. In a letter to the EFF, AT&T objected to the filing of the documents in any manner, saying that they contain sensitive trade secrets and could be "used to 'hack' into the AT&T network, compromising its integrity". However, Chief Judge Walker stated, during the September 12, 2008 hearing in the EFF class-action lawsuit, that the Klein evidence could be presented in court, effectively ruling that AT&T's trade secret and security claims were unfounded. Duty to notify Congress The Bush administration contended that with regard to the NSA program, it had fulfilled its notification obligations by briefing key members of Congress (thirteen individuals between the 107th and 109th Congressional sessions) more than a dozen times, but they were forbidden from sharing that information with other members or staff. The CRS report asserted that the specific statutory notification procedure for covert action did not apply to the NSA