USA military to recruit foreigners?

Here is a startling news item:

Boston.com - USA military to recruit non-citizens?

This would be a big step toward following the Roman Republic's slide into Empire! A lot of our freedoms depend upon the idea that the military would "rebel" internally if used against US citizens in a repressive manner. That internal cultural restraint in the military goes out the window if the troops themselves are not Americans. Wow. A matter of grave concern, here.