Re: “...there are a whole host of other causes that are involved in the high unemployment rate, many of them can be laid at the feet of rampant Illegal immigration...”
The most important cause is LEGAL immigration.
Our current rate is 1.25 million Legal immigrants per year, the highest of any country in the history of the world.
Most of those immigrants have limited work skills and limited education.
The claim that one third of new immigrants have a college education - which is slightly higher than native born Americans - is deliberately deceitful.
Almost all college educated immigrants have received their “degrees” from Third World universities and were employed by their local government or a government sponsored enterprise.
They have no work experience in a competitive business environment, and their degrees are not accredited by USA companies.
Massive LEGAL immigration, and about 1 million LEGAL work visas each year, have crushed the wage scale in low skill American jobs and in Information Technology jobs.