Immigrants historically have always worked harder than native Americans. That’s why it’s so good to have immigrants.
I don't care HOW hard you work, how conscientious, how capable and any other adjective you want to put on it ... little tiny fingers have a purpose we just can't fulfill ... get over it.
They haven't, and no they don't, they just tend to take over the jobs from low skilled and beginning american workers.
An example is Hispanics, every labor area that they have taken over in the last 50 years, is now degraded and less skilled and effective than what it was.
There is a reason that their home countries look lazy and trashy, and unskilled.