Columbia subject headings:
Emigration and immigration law--United States.
High technology industries--Employees--Supply and demand--United States.
Labor supply--United States.
Skilled labor--Government policy--United States.
Harvard subject headings:
Emigration and immigration law--United States.
High technology industries--Employees--Supply and demand--United States.
Labor supply--United States.
Skilled labor--Government policy--United States.
Princeton subject headings:
Emigration and immigration law--United States.
High technology industries--Employees--Supply and demand--United States.
Labor supply--United States.
Skilled labor--Government policy--United States.