Utah Considers Warrantless Internet Subpoenas

http://yro.slashdot.org/story/10/02/24/025225/Utah-Considers-Warrantless-Internet-Subpoenas?art_pos=19

"The Utah State Legislature is considering a bill granting the Attorney General's Office the ability to demand customer information from Internet or cell phone companies via an administrative subpoena, with no judicial review (text of the HB150). This represents an expansion of a law passed last year, which granted that ability when 'it is suspected that a child-sex crime has been committed.' Since becoming law, last year's bill has led to more than one non-judicial request per day for subscriber information. Pete Ashdown, owner of a local ISP and 2006 candidate for the US Senate, has discussed his position and the effects of this bill."

Why is it that when something is done via computers suddenly the system we already have won't work?  What is wrong with warrants with judicial oversight for ISP data?  Child porn and terrorism are the ways they get these unconstitutional powers, then they can expand them.