The market has had a negative month this month because of trade war concerns between the US and China. However, today a new leg lower in the market was taken because of President Trump threatening Mexico with tariffs if they don’t help control the flow of illegal immigration coming into the US from their country.
Never a dull moment.
https://www.cnbc.com/2019/05/31/us-stock-futures-fall-after-trump-announces-new-tariffs-on-mexico.html