Continuing my theme from above; if legislators took a 6 month recess after every major crisis before starting to debate it the quality of law would probably be a lot better. Democracies naturally tend to deadlock anyway, stuff everyone agrees on got waved through years ago. Most of the time in session is grandstanding and making a fuss without achieving much.

Legislators have a terrible habit of using a crisis to:

1) Make something that was already illegal super-dooper illegal (see: terrorism).

2) Mucking up traditional safeguards against bad government - like evidence requirements, reasonable process, human rights in some cases, debating the legislation, reading the bill before voting on it, etc.

In emergencies, legislators are just going to rubber-stamp things technical experts wave under their nose/hand power to some executive. They aren't needed.