I find this kind of odd. Just who is supporting the family while the breadwinner is gone for four years? Is he working in Pakistan and sending money back to his family? Wouldn't it be cheaper to all live together in Pakistan? The fact that they were gone for four years is just VEY suspicious to me, especially since the son is at the perfect age to have gone through a madrassa and become throughly immersed in the extreme Wahhabist cult.
Gee maybe the wife who stayed behind is working....that happens. I've found a lot of new citizens to have very high work ethics and really want to get ahead, and do whatever's necessary to support their family, instead of collecting welfare/living off US govt. like a lot of Americans whose families have been here for generations.