Illegal or legal.
Check it out:

The number of foreign-born individuals holding jobs in the United States hit a recorded high of 24,639,000 in August, according to data from the Bureau of Labor Statistics (BLS). The BLS has been tracking the number of foreign-born workers annually since 2005 and monthly since 2007.

The BLS does not distinguish between foreign-born individuals who are in the United States legally and those who are here illegally.

“The foreign born are those who reside in the United States but who were born outside the country or one of its outlying areas to parents who were not U.S. citizens,” the BLS explains.