Swire pointed out that business records obtained under FISA are different from those obtained under similar criminal legislation, in that gag orders may not be applied to criminal investigations. He also argues that the US DOJ's assertion that they can gain access to documents held by a third party because these documents are not protected by the Fourth Amendment is flawed because "it mistakenly asserts that something that is constitutional is also desirable policy". He points out that "to see this mistake, consider that a 90 percent income tax is almost certainly constitutional, but few people think it therefore would be a wise policy" . In this light he argues that a better policy for sensitive library documents is to have significant oversight from the courts.