“...perhaps, I’m wrong and the average I.Q. in America hasn’t decreased to -50...”
The predominant Rat constituency is in places like Washington DC, Baltimore, Philadelphia, Detroit, Memphis, Atlanta, New Orleans, etc.
Check the IQ of the inhabitants, you will find the answer. It’s also why those cities are run to the ground. Same thing is happening to the federal government.
When you import the third world, you become the third world. /spit
Western civilization depends on there being a certain minimum number of intelligent and trustworthy people to run it.
The Third World is poor because it has low-IQ people and a culture of corruption. Colonialism created a net benefit to these people. Where colonialism created a native cadre of people, then things stayed together after the colonialists left (India). Other places, things fell apart (Most of Africa).
And then inner city thugs create their own third world by beating up anyone who tries to learn, calling it "acting white".