You're being ridiculous. It's not picking on them at all. They are trying to protect US citizens from losing their jobs (or getting wages cut) due to a sudden availability of cheap labor. A government is rightfully concerned with making sure its own citizens are gainfully employed. Citizens vote, foreigners don't. Every person within those borders who does not have a job puts a drain on the rest of the country. Someone without a job outside of those borders does not. So bringing someone across those borders while an unemployed person is within them is a net economic negative. Look at the biggest H-1B recipients: http://www.myvisajobs.com/Reports/2015-H1B-Visa-Sponsor.aspx It's all low quality outsourcing shops like Infosys and Cognizant.
>why USians should have a god given right to jobs in the US?
These laws/protections are intended to prevent a race to the bottom. If the public subsidizes the operation of a company through security, education, and infrastructure, the community that makes that investment is entitled to ensure that the fruits of that investment go to other members of the community.