Welcome to Fluther.
It’s not “easy”, though it can be done. I work every day among many immigrants to this country, from India, China, New Zealand and South Africa, as well as several countries in the Middle East (whom I don’t know so well, so I can’t list their countries separately – although one of my oldest friends in the company is Lebanese).
The one thing that all of those people have in common is that they are all engineers. (The other thing that they have in common – though this is nowhere near a requirement, just a coincidence of their own age and “the way we used to be” – is that they are all men. Let me repeat, though: We also have plenty of female engineers, only not so many that I’m aware of from overseas. Except one engineering manager from South America.)
So that’s really the key that I see. If you bring knowledge and value to the country, then the ways are greased for you. We’re not so big any more – sadly, I think – on the words of Emma Lazarus:
“Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, tempest-tost to me…”