Because you have to spend years re-training and certifying to US standards, all the time without a job and earning money to pay for said training:<p><a href="http:&#x2F;&#x2F;www.npr.org&#x2F;sections&#x2F;money&#x2F;2013&#x2F;02&#x2F;15&#x2F;172108835&#x2F;should-the-u-s-import-more-doctors" rel="nofollow">http:&#x2F;&#x2F;www.npr.org&#x2F;sections&#x2F;money&#x2F;2013&#x2F;02&#x2F;15&#x2F;172108835&#x2F;shoul...</a><p>And that&#x27;s putting aside the fact H1-Bs are not exactly easy to come by right now.