Where is the evidence for the travel ban?

During last month's Supreme Court oral argument on the the legal challenges to President Donald Trump's travel ban policy, Solicitor General Noel Francisco assured the justices that the president's numerous statements calling for a "Muslim ban" and equating that with his later "territorial" policy of targeting residents Muslim-majority nations, had no connection to the travel ban. Instead, Francisco claimed that the policy was actually based on an "extensive worldwide process" analyzing of the security risks posed by entrants from all of the world's 200 nations, which in turn resulted in a "neutral baseline" of security criteria that were even applied to "every nation in the world." Meanwhile, the administration refuses to release this supposed analysis to the courts (despite the availability of in camera proceedings under which classified information could be released to the judges but withheld form the public), and Francisco claims that judges must accord the president "a very strong presumption that what is set out there is the truth."

But, as David Bier of the Cato Institute explains in a recent post, the evidence suggests that no such "extensive" analysis or "neutral baseline" actually exists. All that actually exists is a perfunctory 17 page document with little or no analysis and evidence.