I receive social security benefits from both the U. S. and Canada, since anyone who paid into both systems is eligible for benefits.

This is a reciprocal deal. The amount from each country depends upon length of employment requiring payment into their systems.

Moreover, one who spends his working life in the U. S. and retires to Lower Slobovia is entitled to and receives full benefits.

Guest? What does that mean? Wetback? Illegal? Undeclared income?