Part of this relates to the failure to acknowledge the duress exception in the material support bar under U.S. law, which I was describing before. So people who pay ransom for their relatives are considered to have materially supported terrorism. Part of it has to do with arbitrariness and problems that are endemic now to the U.S. system: excessive corroboration requirements; excessive detention; requirements of proof of the persecutor's motives, in many cases; and the one-year bar.
On February 8th, 2007. See this statement in context.