Not true. Workers that are good at what they do can increase demand for the company/product/service which creates jobs.
Just like a bad worker can kill hurt a companies reputation and hurt it’s business, a good worker can bring in business, and grow the reputation.

It’s impossible to have that conversation. The left will fight against it to protect the immigrant, and the right will fight against it to protect the business, the result is that it’s politically incorrect to talk about on both sides.