Hyperbole in the extreme. Garbage.
Schlafly has been right on some issues (e.g., ERA, family-related issues, abortion) in the past, but I've also noticed that she specializes in taking relatively benign things outside her area of knowledge and making absurd "end of the world" claims.
The plan is simply to have cooperative committees to handle a crisis that might strike and to try to coordinate a response. For example, if a plague broke out in Europe, the officials of the three countries could coordinate a technique to minimize the risk of the plague getting to North America.
None of the countries gives up their independence.
For Schlafly to say that "a foreigner will be the decision maker for Americans in two out of every three years" is absurd. Schlafly apparently does not understand the difference between the chair and the full committee.
The chair doesn't set policy. The chair of the Committee would not be the decision-maker. The chair simply calls the meeting ("meet in my country tomorrow at 1 pm") and does similar things.
If the full committee could override Congress (and they can't), even that would be a lot different than "a foreigner will be THE decision maker for Americans" [emphasis added] as Schlafly wrongly claims. The committee, i.e., the decision-makers of the countries, meet and try to adopt a crisis response such that one country's response doesn't increase problems for other countries.
Wanna make a bet? As Calderon said in his speech to Mexico, "where there is a Mexican there is Mexico."
For example, if a plague broke out in Europe, the officials of the three countries could coordinate a technique to minimize the risk of the plague getting to North America.
Now should this plague break out in Mexico, do you honestly think these officials would close the borders? The SPP agreement is to keep the borders open during a pandemic as money is more important to them than life. Free trade must go on come hell or high water. So therefore, we will have a world wide pandemic due to free trade.
North American Union to Replace USA?
In Corsi's article he linked to the CFR's 2005 report. Do a search on "SPP". SPP (or its future manifestations) and the NAU go hand-in-hand.
Whether Schlafly sufficiently makes her argument against SPP is moot to me.