I guess we saw the same in Australia with the 457 visa, and our Prime Minister abolishing it now.
The act is peppered with phrases like "Preferring local workers etc" but we know how that turned out (and why it was so easy to ignore the spirit of the act). It raises revenue for the government, and cuts costs for the "poor old companies" at the expense of local workers.
Shame on anyone that abused this.
http://www.aph.gov.au/About_Parliament/Parliamentary_Departm...