One question is whether anyone in government requested that the federal FISA court issue a warrant so Tamerlan could have his Web postings or phone calls surveilled electronically.
Criminal Investigation Division of the IRS has the power to issue a search warrant.
Meanwhile, Palestinians have expressed anger at the issue of a warrant for the arrest of Marwan Barghouti, the head of Mr Arafat's Fatah movement in the West Bank, by an Israeli court.
Critics also say it is unfair the US authorities need only to outline the alleged offence, and provide "evidence or information that would justify the issue of a warrant for arrest in the UK" whereas British police must provide the American courts with evidence of "probable cause" if it wishes to extradite someone.
The plaintiff, Abdullah Al-Kidd, alleges that prosecutors never had any intention of calling him as a witness and submitted a false affidavit for the purpose of persuading a federal magistrate to issue a material witness warrant.
FORBES: Terror-Related Case Has Supreme Court Poised To Revisit Pleading Standards Controversy
The California Legislature recently approved a bill on this issue and other jurisdictions are trying to sort out whether a warrant is required under the Fourth Amendment and various state laws.
But CALEA required law enforcement to obtain further authorization, though Zwillinger says it failed to specifically require a warrant, leaving the issue unresolved and interpreted differently in different states.
Yumeshin failed to block Japan Engineering's defences of a stock split and an equity warrant issue, but the Tokyo District Court laid down reassuring criteria for their use: that they must not simply be in the board's self-interest, and that they are subject to shareholders' approval.
"It's hard to imagine that there was a substantial threat to an investigation of past events that would warrant not giving AP a chance to go to court on this issue, " he said.
In California and other states, police can legally search phones even without a warrant, though courts around the country are still producing conflicting rulings on the issue.
FORBES: Here's How Law Enforcement Cracks Your iPhone's Security Code (Video)
应用推荐