late wrote:California is complicated, but I will give you an example why. There used to be a thing called the California lifestyle. A blue collar guy could afford an employee (this is in a one income family). A lawyer could afford to have staff, a cook, a gardener, someone for child care.
I believe you are partially right, and partially wrong.
Immigration probably did increase living standards for a period of time (mostly for higher earners), but I believe that increase may have been unsustainable. (Indeed, in another thread I argued that immigration contributed to an economic bubble)
Yes, it resulted in a temporary improvement in living standards and economic increase because the price of low-skilled labor went down, and thus prices (for many types of things) went down.
But long-term it created many other costs. Having lots of poor people in an economy consumes lots of money, in all sorts of ways. Most of these are indirect costs. (For example, hospitals have to raise their prices to deal with people who use the emergency room and can't pay. Taxes have to go up to pay for the children of poor families to go to school; in California it cost $14,000 per child per year, which is nearly half a typical middle class income after taxes)
Then we could talk about the dire shortage of affordable housing that was created from adding so many low income people, with young adults unable to afford moving out on their own. Or the poorer working class getting displaced from the lower level jobs they once did, and wages being pushed down by the competition. Most of the former working class in the state was pushed out by the 1990s.
California's time period of "economic prosperity", where you could argue that immigration may have resulted in an increase in living standards, lasted from around 1984 to 1999. By 1999, pretty much everyone was pushed to get a college degree to be able to live in a house and afford a middle class lifestyle, partially due to the rising cost of housing, but also do to companies increasingly requiring college degrees for the higher paying positions. At that period of time, it was basically used as a filter to separate the immigrants from the white people in the workforce, one could say. The prevailing idea at the time was that immigration would create more people at the bottom of the pyramid and then everyone else could get a college degree and rise higher in the pyramid. (Of course this was literally like a "pyramid scheme", not economically sustainable over more than one generation)
Even today, immigration is resulting in lower prices for less skilled labor (than in other parts of the country where there is much less immigration). However, you can also see housing prices and rent levels are very much higher in these areas, resulting in a big overall increase in the cost of living.
And younger people (including elderly persons and disabled persons) have fewer unskilled entry level job opportunities, due to competition from adult immigrants. (The easier, more desirable, or less unpleasant entry level jobs are all taken)