[suzanne4]

Any type of visa that is sponsored by an employer for work in the US requires that the job be first offered to Americans. That is why is it is required that a document be filed with each and every petition that the job was posted for ten days, and then there was a thirty day waiting period before anything can be submitted. And any type of temporary work visa is employer and job specific...there must be ajob there for it to be okay'd.

And this holds true for any type of visa that goes thru immigration for approval, including any type of temporary visa specific to a particular country, other than the TN Visa from Canada and Mexico that just requires a Visa Screen Certificate and a job offer letter at the border.