Some marching along are not in Iraq voluntarily:
The top U.S. commander in Iraq has ordered sweeping changes for privatized military support operations after confirming violations of human-trafficking laws and other abuses by contractors involving possibly thousands of foreign workers on American bases, according to records obtained by the Tribune.
Gen. George Casey ordered that contractors be required by May 1 to return passports that have been illegally confiscated from laborers on U.S. bases after determining that such practices violated U.S. laws against trafficking for forced or coerced labor. Human brokers and subcontractors from South Asia to the Middle East have worked together to import thousands of laborers into Iraq from impoverished countries.
Two memos obtained by the Tribune indicate that Casey's office concluded that the practice of confiscating passports from such workers was both widespread on American bases and in violation of the U.S. trafficking laws.
...
Although other firms also have contracts supporting the military in Iraq, the U.S. has outsourced vital support operations to Halliburton subsidiary KBR at an unprecedented scale, at a cost to the U.S. of more than $12 billion as of late last year.
KBR, in turn, has outsourced much of that work to more than 200 subcontractors, many of them based in Middle Eastern nations condemned by the U.S. for failing to stem human trafficking into their own borders or for perpetrating other human rights abuses against foreign workers.
KBR's subcontractors employ an army of workers to dish out food, wash clothes, clean latrines and carry out virtually every other menial task. About 35,000 of the 48,000 people working under the privatization contract last year were "Third Country Nationals," who are non-Americans imported from outside Iraq, KBR has said.
"Pipeline to Peril," which was based on reporting in the U.S., Jordan, Iraq, Nepal and Saudi Arabia, described how some subcontractors and a chain of human brokers allegedly engaged in the same kinds of abuses routinely condemned by the State Department as human trafficking.
The newspaper retraced the journey of 12 men recruited in 2004 from rural villages in the Himalayan kingdom of Nepal and documented a trail of deceit, fraud and negligence stretching into Jordan and Iraq. Most of the men had contracts filed with their government falsely promising them positions at a five-star hotel in Amman, yet all 12 were sent into Iraq in August 2004. They were ultimately kidnapped from an unprotected caravan traveling along what was then one of the most dangerous roadways in the world: the Amman-to-Baghdad highway.
All 12 men were subsequently executed by militants in likely the single worst massacre of foreign workers in Iraq since the American-led invasion more than three years ago.
Read the whole article. My quote from it doesn't do justice to the buck-passing and apathy and blaming someone else that is discussed in the piece.
I didn't post about this just to make the rest of your day unhappy. There is another equally valid point, and that is the problems in unregulated markets. Markets are not a god. Markets have no morals. If no laws forbid a market in, say, human slaves, such a market will be created. Halliburton is not a good substitute for a government. And so on.