maybe but not DoD

DoD requires to be US citizen pass OFM investigation, which can take for years for whom have oversea connections. It took me three years and a appeal court appearance for it. You can look at all the cases at DOHA's website to see your chance. Your best bet is to ask for interim clearance sponsored by hiring company or get civil clearance like FAA or DOE. Clearance is very hot commodity (higher pay and stable jobs) these days, but now very hard to get for foreigner .