I've seen this myth too often lately to let it slide again.
It's not as simple as that. The SCOTUS has ruled in a number of cases on rights afforded to illegal immigrants. This guy (underwear momber) wouldn't get them all, a substantial nexus to USA is required for some rights that US citizens have (not to mention non-citizens, whether legal or not, do not have some rights such as that to vote).
In the underwear bomber's case I do not believe there is any legal impediment to trying him as an ememy combatant in a military tribunal, it was just a decision by the Obama admin to go this route. Likewise with KSM et al.
Fern
You know Fern you're seeing an awful lot of 'myths' lately that aren't myths. If you are in the jurisdiction of the US, the Constitution applies to you, period. Specifically as we are referring to criminal provisions SCOTUS has held in Wong Wing v. US that noncitizens are entitled to the same criminal protections as citizens are.
While there are times in which other constitutional actions and such might intersect with these rights and come to a different outcome there is absolutely no truth to the idea that noncitizens are not protected in this way.
For an article detailing the difference here you go: http://www.slate.com/id/1008367/
There isn't a legal impediment (currently... which is also bullshit) to Obama putting him into a military trial, but then again there is also no ruling currently preventing Obama from putting a US citizen through a military trial as Bush was planning to do with Jose Padilla. Bush later elected not to, but it was his choice.
