American medication?

This weekend my grandmother needs to dance visit her hubby surrounded by mexico. there have been alot of change in policy just now, does anybody know if she is going to have a problem bringing insulin (bought surrounded by u.s.) back across the border?

Answers: No, my sister uses insulin and she buys them contained by Mexico or US depending where's she at and going through.

My mom has no problem, but I live within Canada so who know about your crazy law.