I personally started feeling the downturn in civilization the morning after Neil Armstrong set foot on the moon. That morning I woke up expecting to see/hear nothing but celebration, but what I heard instead was the media questioning the value of space exploration, and whether the space budget should be spent on welfare programs.
For me, it was the election of Barry the Muslim being thrust upon the American people. The beginning of the End.
Good list of proposals, none of which will happen, least of all closing the border.
In my opinion, it started going to crap they day the CIA/FBI coup against President Nixon succeeded.
Nominating George HW Bush in 1988 certainly didn't help matters any.
In my opinion, the world started going to crap in 1990 when the U.S. government decided to use our military personnel as mercenaries to protect Islamic royal families in the Middle East.
When we started accepting immigrants in the mid-1800s America started changing for the worse with a new voter base that didn’t share our values and concepts of government.