Read the rest of the post instead of cherry picking one statement.
If wages become artificially high due to too tight of a labor market it makes it so that the products those workers create become to costly for people to buy.
It causes too much inflation and while it helps a very small portion of the population that is receiving those wages, it harms many more people than it helps.
I don't believe that we should allow unlimited immigration.
I do believe that we should make it so that employers should have to first try and find an American worker to fill a job before hiring someone in a guest worker program.
If there is a pool of available American workers, yet the employer is trying to hire immigrants because none of the Americans are willing to do that job for that wage, then they are not trying to hire American workers.
This is something they can detect and have detected in other VISA programs, such as the H1B technology VISAs.
The key to any work visa program is matching immigrant workers with necessary skills with job openings in a competitive market.
However, we first need to enforce our immigration laws, or it's pointless.
What is artificial about market raising the wages? If there were no cheap Third World labor, would US job market be artificial? Would US economy decline?
There were civilizations with plenty of cheap labor like ancient Egypt and they were quite stagnant.
Then who's going to build the McMansions?
So...it's ok to hire illegals for next to nothing because you cannot find some poor dimwit American to accept the pittance offered.
There used to not be a problem finding Americans to take low paying jobs because they weren't so low paying that they were impossible to live off of.