If the federal government won't impose economic sanctions on Mexico for aiding Central Americans coming here illegally, then the American people certainly can impose a few of our own.
Don't buy ANY food products from Mexico! If country of origin isn't on the label, ASK. If you can't get a satisfactory answer - don't buy it. Beef, grapes, peppers, strawberries, Hershey chocolate, etc..... Just learn to do without if there's no suitable substitute. I love bananas but quit buying them since they all come from Guatemala, Honduras, or Costa Rica.
Don't purchase any textile or other manufactured items from Mexico. It's junk anyway.
Don't travel or vacation in Mexico! You are putting your life at risk just being there. We have 50 states here. Vacation in your own country!
Boycott everything Mexico. Little things add up to really big things. They will get the message if enough of us participate.