First Halliburton gets the Homeland Security contract to build the camps.

The contract, which is effective immediately, provides for establishing temporary detention and processing capabilities to augment existing ICE Detention and Removal Operations (DRO) Program facilities in the event of an emergency influx of immigrants into the U.S., or to support the rapid development of new programs. The contingency support contract provides for planning and, if required, initiation of specific engineering, construction and logistics support tasks to establish, operate and maintain one or more expansion facilities.

Professor Peter Dale Scott's perspective on the Halliburton contract.

Now I read this: Bush Moves Toward Martial Law

In a stealth maneuver, President Bush has signed intolaw a provision which, according to Senator Patrick Leahy (D-Vermont), will actually encourage the President to declare federal martial law (1). It does so by revising the Insurrection Act, a set of laws that limits the President's ability to deploy troops within the United States. The Insurrection Act (10 U.S.C.331 -335) has historically, along with the Posse Comitatus Act (18 U.S.C.1385), helped to enforce strict prohibitions on military involvement in domestic law enforcement. With one cloaked swipe of his pen, Bush is seeking to undo those prohibitions.

The only Senator to speak out was Patrick Leahy:

In a telling bit of understatement, the Senator from Vermont noted that "the implications of changing the (Posse Comitatus) Act are enormous". "There is good reason," he said, "for the constructive friction in existing law when it comes to martial law declarations. Using the military for law enforcement goes against one of the founding tenets of our democracy. We fail our Constitution, neglecting the rights of the States, when we make it easier for the President to declare martial law and trample on local and state sovereignty."

Senator Leahy's final ruminations: "Since hearing word a couple of weeks ago that this outcome was likely, I have wondered how Congress could have gotten to this point. It seems the changes to the Insurrection Act have survived the Conference because the Pentagon and the White House want it."