Douglas Schweitzer's post about 90 day detention times raises an interesting point, but not entirely a computing one.
Detaining someone for 90 days on the basis that they may be a terrorist is fine, providing you have proof that that is the case. Here in the UK we unfortunately already have cases of people being detained under the terrorism act for comparatively minor offences - including this bizarre event at the Labour Party Conference.
Now while I don't think that somebody would be detained for the full 90 days in similar circumstances, even a few days in this situation can be fatal to a business.