Real simple:
1. Are there more people working today than 20 years ago?
2. Are they earning higher average wages than 20 years ago?
3. Are more dollars flowing in to the Social Security system than 20 years ago?
If the answer to those 3 questions is “yes”, then the increase in imports is immaterial to the fact that Social Security is a Ponzi scheme.
If the answer to those 3 questions is yes, then the increase in imports is immaterial to the fact that Social Security is a Ponzi scheme.