Both the Left and the (phony corporate) Right have a powerful stake in massive immigration.
The Left wants it because the great majority of immigration is non-white, and they lust for the day when whites cease to be the majority in the country.
The Right wants it for the reason you stated-to depress wages, hopefully until American wages equalize with those of the Third World.
The victims are the white middle and working classes who are losing economically, socially, and politically
There is a "white" self-loathing, maybe due to color, a lot due to the fact the "people" failed the socialists and didn't follow their lead. The "immigrants" fill a need to express sympathy and control on subjects who don't talk back.
But the plan effects Americans of any ethnicity. The candidate who expresses this truth without the tint of racism can win the election hardily - with massive minority support.
Also, the corporate "right" has coopted the "left" which really has no interest in supporting actual Americans, for whom they have latent hostility. You can call the lobby the "corporate-left", a mix of industry lobbies that can't outsource their labor overseas allied with left-identity groups.
Excellent synopsis...