I didn't think I needed to provide evidence, because it is common sense driven by basic supply and demand. You want a developer, then if all or nearly all deve

I didn't think I needed to provide evidence, because it is common sense driven by basic supply and demand. You want a developer, then if all or nearly all developers are employed you need to offer higher wages to them to defect to your company. If however you can import an immigrant and pay them the same or lower wage (which is better than they get in their home country), then suddenly you don't need to offer a higher wage to local developers. The fact that I need to explain, and prove, this to supposedly intelligent people is frankly mind boggling.