President Bush's Order allows military tribunals to try ALIENS, but it does NOT apply to CITIZENS. No rights possessed by any AMERICAN are compromised one whit by this Order.
As for whether such an Order is constitutional, the Supreme Court said yes, unanimousnly, in Ex Parte Quinn in 1942. And President Roosevelt's Order that was upheld in that case, DID apply to citizens as well as aliens. SO, if Roosevelt's broader Order was valid, self-evidently, Bush's narrower Order is also constitutional.
The only way that certain Democrats can push this issue is to lie about the history of such tribunals, and get gullible people to believe their lies. Don't be gullible. Get the facts, and reject the lies.
Congressman Billybob