@BrightNoon,
I would first of all be skeptical of anything from infowars.com...
But this also does not surprise me at all, if it is true. It has been well known for quite some time now that FEMA has large internment camps (to be used for housing people) setup all over the country. Maybe they are there for events such as hurricane Katrina, but they could easily be handy for other purposes if they needed to be.
All of the Iraq war veterans would be well-versed in enforcing martial law here at home, should they be ordered to do so. The experience they will have had policing the streets in Iraq is almost identical to what they would be dealing with here in the US if they were used as a police force--though it would be easier for them here, because they are familiar with American culture, and there is no language barrier.
Maybe this is one reason we are in Iraq-- learning and perfecting the art of policing urban environments in preparation for things to come (hey it's as valid as some other conspiracy theories you read). The experience in general is valuable, because the military likes to go to war on a regular basis so that they have men in command who have seen real combat, and in order to test strategy (one big theory as to why we really went to Vietnam).