First I have heard of this treaty with Mexico. Can you provide me a link so I can become better informed? Thanks.
Thank you for asking about this.
http://waysandmeans.house.gov/media/pdf/ss/mexicofacts.pdf
For some reason the government has decided not to put the complete treaty online. This is the report that the GAO has submitted to congress. If you will notice we are giving SS to Mexico for only 3,000 US workers and risking a catastrophy in our SS system. We will also be rewarding illegal behavior.
I am hoping you will call your congressmen about this and show your displeasure.