It is probably an error to ascribe logic or any concept of consistent strategy to Democratic Party machinations over the course of decades.
Why?
The DNC has its agendas, but logical or strategic they are not. It's been clear for a long time that immigrants don't make faithful Democrats.
If one looks at a long enough arc of history, I'd agree.
However, the theory of a "Democratic majority" based on racial demographics was one founded upon roughly 3 decades of rather consistent trends.
You carefully specify "illegal immigration,"
Right.
and I'd argue that members of the Republican Party support "illegal immigration" more than Democrats do.
It's certainly possible. If we were discussing the political landscape of 20 years ago...I might even agree that a majority of Republicans do. At this point though...it's hard to be a Republican openly in favor of illegal immigration and get elected.
The DNC wants to make all immigration legal, not to keep it illegal.
That does seem to be the general idea....but the advantage of keeping at least a significant amount illegal is that those who seem unlikely to follow the party program can be identified and deported before obtaining citizenship.
Without a doubt, "illegal immigration" continues to exist in such a large degree, again, because it is ultra-cheap labor for jobs that can't be outsourced from the CONUS.
Indeed. Although not everyone agrees with my assessment of the issues regarding the depression of wages as a result of this.
Many people have a difficult time understanding that leaving a job like nursing....which is skilled but labor intensive....for a job like owning/operating a landscaping business, restaurant, or housekeeping business is a lot less viable if one isn't able to compromise their morals.
The largest shrink in the middle class in anyone's lifetime was after manufacturing jobs went to cheap overseas labor. Now it's happening in the labor and service industries.
If either party really wanted to eliminate that source of ultra-cheap CONUS labor, they'd arrest the CEOs of companies that employ them.
The companies that employ them are typically not the big companies they actually work for....they're subcontractors. Tyson foods for example, doesn't hire the people who clean their industrial machinery. The company they do hire for that work is employing the illegals so Tyson can pretend they didn't know.
Regardless, they do get fined when caught....but the amounts are small enough that it's just considered the price of doing business.
That takes no new laws, that merely takes a DoJ under a president with the will to do it.
Unfortunately, I think the DOJ will first have to go after corrupt politicians. Merrick Garland for example, has a son in law with a profitable business surveying public schools.
The education company co-founded by Xan Tanner is facing scrutiny after it was revealed the company supports critical race theory curricula while servicing 23,000 schools in the US.
nypost.com
The surveys then tell this business to promote the administration's educational indoctrination. Whether it's CRT, Social Emotional Learning, or the newest iteration, DEI....I've never heard of any example of the survey resulting in any suggestions different from the Biden administration agenda.
Why do this? Why use a "3rd party" private business to promote what is clearly the Biden administration agenda? In case people don't like it....because they certainly didn't vote for it. Unfortunately, I don't think this administration guessed parents would actually run for their school boards and prevent said indoctrination from being taught....but luckily, Garland turned the FBI loose on the parents.
After all, his son in law's millions in government contracts were in danger.