McCarthy totally disagreed with everything Cole said, stating that "It is apt that Professor David Cole begins the title of his response 'Imaginary Walls[.]' His submission is largely imaginary, creating rather than relating 'myths' about the structural impediments to good intelligence that plagued the pre-9/11 world." He believes that Cole's whole argument is pinned to the belief that FISA in unconstitutional, something McCarthy totally disagreed with. In McCarthy's mind, Cole's objection to FISA is that he believes, incorrectly, that under the Fourth Amendment searches are "inappropriate absent probable cause of a crime". He argues that Cole is wrong when he states that FISA requires a lower standard of suspicion to authorize searches, but rather it requires a different standard than is required of criminal searches. McCarthy says Cole's "suggestion that a 'foreign power' under FISA could be any 'political organization' predominantly of non-citizens is overwrought", and that only those organizations proven to be engaged in clandestine operations will be targeted. He also says that Cole is wrong in that under FISA government searches and surveillance were never restricted to searches whose primary purpose was intelligence gathering, and therefore section 218 is not constitutionally suspect. McCarthy says that though the enforcing of a wall between criminal and foreign investigations under FISA was a misunderstanding by the U.S. DOJ, the reality was that the misunderstanding of the Act did not mean that structural restrictions were not established. He ends by stating that "one claims the wall tainted the propriety of intelligence gathering. It blocked sharing of the intelligence gathered. That is the bureaucratic monstrosity dismantled by Section 218... Without that clarification of law, the disastrous primary purpose doctrine would be undisturbed, the unnecessary wall would still be in place, dots would remain unconnected, prosecutions like al-Arian would not have occurred, and the United States would be at considerably greater risk."