Jobs are plentiful in the US just the US Citizens don't like those.
So they employ illegals.
That's true. I often laugh when people complain that there are no jobs. There are jobs, really, tons of them but the problem is that people don't like jobs where they have to move their ass.
It all comes down to income which is the reason why US citizens don't want to do the so called "plentiful jobs" Willy claims exists in the US. In the capitalist nation, everyone is trying to maximize their profitability. One of the ways to do that is to pay their employees less and less money. A US citizen who has to pay a shittone of money in taxes, bills, rent, groceries, gas, etc. to stay alive is not capable of doing a lot of such works that can't cover half of their cost of living.
However, an illegal immigrant who doesn't pay taxes and doesn't have any other choice and is living with 20 other illegal immigrants in a rathole is more than willing to be paid a little and do all those jobs.