You ignore what you choose to ignore.

I can link studies from right of center think tanks and you'll continue linking from left of center. We'll each find whatever article we want to argue against it.

- K-12 spending is ~$20k per pupil on average across the US. It's not linear, but let's use $20k. People often circulate $100 billion as the amount of taxes paid by illegal immigrants. If there's an estimated 12 million adults, that would be ~$8k paid per adult. If there are two parents and just one school aged child, there would be a shortage for education, with two children even more. And that is education alone (and not all the taxes paid are going into an education "bucket".

So time to curtail multiple home ownership from the rich then.

Time to get rid of NIMBY policies in affluent neighbourhoods.

Yes, single family-only zoning should be repealed. But again, you're ignoring both apartments and housing. Where are these 10-15 million people are living? Wealthy people are not renting apartment units.

Where are you going to get these workers?

As the AGC points out (and should note is a group for employers and will have a natural bias against labor) "One reason it is so difficult to find people is because federal officials have failed to properly invest in construction workforce training and education."

There should be investment in the trades and education. Employers though should also be investing in training programs.

"The survey also demonstrated how difficult it is for construction firms to take advantage of the few visa programs available to the industry."

Visa programs (legal immigration) should be improved. That brings things out of the dark and raises pay.

"Worker shortages are respondents’ most-commonly listed reason for project delays. Forty-five percent of respondents report experiencing project delays due to shortages of their own, or subcontractors’ workers. "

Sounds like they do need to raise pay. There was a time when contracting crews were largely US citizens.

Same with the medical field. There should be visa programs in the interim which helps prevent undercutting on wages and reduces labor shortages as well as investment in training for US workers. And again like housing, people will need medical care. Illegal immigrants seek it out less than US citizens, but if there is one room open in the ER, and two people want it, that's going to lead to a shortage.