But hiring foreign labor is unavoidable. So many countries hire US based companies for services instead of hiring locally, that if the US would forbid such practice it would, at the same time, lose a lot of foreign customers due to international trade/work laws usually being reciprocal.

As a company owner, I can tell you Jobs are not paid based on what they are worth, they are paid based on supply and demand. When wages raise it's because it becomes harder to find a resource for such position.

The world is globalized, and the main reason to bring immigrants into the US is to reduce wages. If immigration is restricted, costs in the US will raise and outsourcing entire teams will become more profitable (which will cost even more US based jobs).

In the long run, it all comes down to you having to choose between having a job that doesn't pay as much as you want, or not having one.

It's not likely, it's a fact. I work in South America (Buenos Aires) and there are dozens of thousand software developers and companies that work for companies in the US. As with everything, some are attractive because they have excellent track records and some are attractive because they are cheap (they are bidding on their first projects so they can work for lower wages).
I myself ran companies that outsourced jobs from over there successfuly. Large companies like IBM, Oracle, Microsoft, etc. even hire people from here to manage teams from India. If there is such a huge outsourcing industry here, the same in the rest of the world must be huge.

I think most Americans believe only a small amount of work is outsourced to foreign countries, but I'm pretty sure most US investment in software projects is not even done in US ground.

As if a few techies in the street would make a difference. The will eventually work for less or find something else to do.

I'm a highly qualified professional from a foreign country and (due to my work experience) I got offered jobs by Tesla, Google, Facebook, etc. They basically offered me to come to the US with H1B, or go to Europe and work with a team there. They told me they are moving several teams overseas to EU and South America to work around the visa limit.

The real root cause of the problem is that highly qualified American tech workers are extremely overpaid, while equally qualified European, Eastern European or South American workers can do the same for less. For many companies, If they can't get H1Bs, they open shop overseas or hire foreign contractors. It's as simple as that. An American worker loses his/her job anyway. Sorry guys, you are too expensive and we are living in a global economy!

Colonizing the moon first sounds like the reasonable choice...

Again, you are thinking about outsourcing jobs (Generally India). I'm arguing about outsourcing contractors (China, Taiwan, Korea, Canada, Australia, New Zealand, South America, and East Europe, etc).

This is not about outsourcing jobs. That's the kind of stories you hear about outsourcing cheap labor to India.
This is about outsourcing contractors, and India is not a common target but China, Taiwan, Korea, Canada, Australia, New Zealand, South America, and East Europe are the common targets.

Misleading my ass: http://www.canadavisa.com/cana...
Compare this to US immigration policy.

You pretty much backed all my points with facts, thanks :)

No one said it was a bad thing

That's quite an amazing generalization..

Keep thinking your jobs are lost due to H1Bs, or due to Indians being hired overseas when the company opens a branch there. You are just blind, your jobs are lost at a much higher level because American management nowadays hires foreign contractors, but this is invisible to you. Thus, you can't complain about what you can't see.

Contractors are the easiest way to outsource, because a cheaper price is offered over a proven track record. It's as simple as that.
I run a company overseas that gets contract work from American companies, which recently fired 1000 American employees because they would rather outsource the job to many overseas companies like mine (which are not even in India). Simple Facts:

-American workers are simply too expensive compared with the rest of the world.
-American education is simply too expensive compared with the rest of the world
-America used to lead in science in technology, but the rest of the world catches up quickly

And you know what is worse? Most other developed countries (Canada, Germany, France, Australia, New Zealand, etc) have a totally opposite immigration policy, which encourages skilled workers to migrate and help their industries grow in exchange for a better quality of life. This in turn takes away more American jobs because of competition, as those countries are less expensive and/or subsidized.

The best you can do is to understand and accept this in the first place. You country still has an excellent quality of life, and your jobs being lost to other qualified people is not something you can avoid. Change your immigration policy so skilled workers go to the US instead, and give them more rights so employers can't abuse the H1B restrictions to make them work like cheap cattle, so at least you are not at a cost disadvantage in the playing field. You have to wake up before it's too late!