Maybe 100 billion combined among all stock markets but not just the US stock exchange. What else is he going to do to bring them in compliance. Mexico is saying they are doing everything possible to stop illegal migration but it has only gotten worse not better, when the only thing some people respond to is what ultimately hits their pocketbooks then that's what you go after. Sure we will pay more in the end as consumers but the slowdown in sales also hits the economy of the country, just like the effect on the farmers here over China. The local news here did a story with farmers a couple weeks ago and they all agree this trade war is hurting them but they back the president. That's because China has an advantage that has been going on for decades which makes it hard for them to compete on the world market, that just doesn't effect farmers but all manufactures. The farmers say this should have been dealt with decades ago. It's costing us billions to deal with illegal immigration, border agents, detention centers, judges, etc., let alone the amount it cost in social programs, police, prisons, education and the billions they send out of this country that could be spent in this country.