Job Search: academia vs. industry?

<p>So I wanted to know if I should be worried if my research area of interest may not have as much as an implication in the industry as other areas in my major? Is there a plethora of research labs and university positions available that I need not be worried? especially since I'm an international student? Actually, I've heard that people who complete their PhD can get their green card easily. Is that true?</p>

<p>And for those who know, are there many jobs in the industry that demand computational mechanics?</p>

<p>Thanks in advance!</p>