Preemption

The theory of preemption works in many settings besides war. If you suspect someone may be potentially disruptive, you can have them thrown out of a presidential speech:

A former White House official who ordered three activists expelled from a 2005 Denver public forum with President Bush says it was White House policy to exclude potentially disruptive guests from Bush's appearances nationwide.

The former official, Steve Atkiss, revealed the policy Friday in an interview after two volunteer bouncers identified him and a current White House staffer, Jamie O'Keefe, as the officials who ordered the so-called Denver Three activists sent away from the event.

The activists had done nothing to disrupt the forum, and two of them sued over the incident.

... White House security staff "certainly has the right to eject persons who try to shout a speaker down, block him from being heard or otherwise cause a disruption. But 'potentially' disruptive is not a legitimate reason to exclude persons from a public event," ACLU legal director Mark Silverstein said.

"This is especially true in this case, where our clients were apparently labeled as potentially disruptive simply because they were perceived to disagree with the president."

I suppose it should also be just fine to arrest and jail anyone who might potentially do something illegal. Since anyone might potentially do something illegal, that should give the president to right to arrest anyone and everyone.

Yup, we have to stamp out crime. We have to stamp out terrorists. So let's just arrest and lock up everyone.