I'm from the UK, and despite having interests in government I paid little attention to our immigration process until I started to look into that of the USA. Th

I'm from the UK, and despite having interests in government I paid little attention to our immigration process until I started to look into that of the USA. The problem is simple to sum up: highly skilled workers aren't going to sneak across the Channel Tunnel/Rio Grande very often. They'll stick to as-legal-as-possible means because generally they're respectable tradesmen, who've invested a lot of time/money in their skills and want to use them as best as they can. Unfortunately, these government-encouraged means of immigration/foreign-workers are the easiest things to stop. Hence an 'immigration clampdown to save the jobs of the natives' really consists of blocking the vast majority of the foreigners you might actually want to move to your country.