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Only the former question is currently before us , and it must be resolved by weighing the costs and benefits of preventing the use in the prosecution 's case in chief of inherently trustworthy tangible evidence obtained in reliance on a search warrant issued by a detached and neutral magistrate that ultimately is found to be defective . Essentially , the new law releases the DoD from a lead role investigating the illnesses and their causes . As well as weighing the costs and benefits of CSR implementation , policymakers should have a list of " decision rules " allowing them to weigh the advantages and disadvantages of expanding and modifying CSR policy . CIS is providing the products and the recommendations " as is " and " as available " without representations , warranties or covenants of any kind . The question whether the exclusionary sanction is appropriately imposed in a particular case as a judicially created remedy to safeguard Fourth Amendment rights through its deterrent effect , must be resolved by weighing the costs and benefits of preventing the use in the prosecution 's case in chief of inherently trustworthy tangible evidence . He stayed around the platform - the " front porch " as the astronauts called it - by that hatch for about three-quarters of an hour , checking the handholds and the lights that had been trained on specific portions of the spacecraft .