Saad,
The options in US are getting meager, and even thinner for a Pakistani, right from the time they step in to the airport after arrival.
Pakistan has alot of potential and far more opportunities for people, if people quit re-electing looters and implement religion on themselves before teaching it to others.
There are risks in everyfield, even for a welder, rickshaw driver or a plane pilot, but don't let it deter your determination.