So you're complaining about unskilled immigrants applying for your job opening, and apart from being unqualified for the job, they apparently can't even legally

So you're complaining about unskilled immigrants applying for your job opening, and apart from being unqualified for the job, they apparently can't even legally work in the USA anyway. What about if you had skilled immigrants applying for the job? Say, some qualified mechanics, whether from Germany or China or Mexico? The problem with America's immigration system (from an outsiders perspective) is that skilled immigration visas (i.e. H1B) are only worthwhile for high skill white collar jobs, and in particular for larger companies who can be bothered with the visa lottery. I see no reason why skilled immigration for lower paying, but still skilled jobs, like auto mechanics shouldn't be possible. In most developed countries, they run a points system. If you want to move here to Australia and become an electrician or any other high demand job, it's relatively easy as long as you have a qualification, good health, and can speak English, and I think that's the way it should be. Obviously long term you should be trying to train more mechanics, but that's a 5-10 year process, and doesn't fix the problem that you're facing right now with a lack of mechanics. It sounds like you have a bigger problem than simply a lack of qualified candidates. Do you have any unqualified Americans applying for your job? How little are you offering that European backpackers (who in my experience will work for a pittance) are asking three times what you're offering?