Okay, Economics 301...if you can't stand the heat get out the kitchen. Okay...policy, tariffs...this is destabilizing period. It cause uncertainty in the markets. If you don't know what Tariffs are, go look it up. Trump continues to make twitted policy threats that destabilize the markets because of insecurity and skepticism, uncertainty. The things he attacks via twitter, because the media has allowed this form of correspondence to dictate how the man communicates with the public, an acceptable way to communicate with the public, caused concern. You see, sometimes attacking what many people think is small, is actually hug. The world is give and trade, there has never been a time when there was no form of trading around the world. When this age old operation is destabilized it is never a small thing. Taxes: this causes problems for everyone, because it leads to inflation, literally, and that leads to slow down in consumer buying. The bottom line is we have a insane leader and unfortunately this County is a major player in trade and world wide policy decisions this man is proving he is not qualified to take on much less manage. The markets will not stabilize until the government stabilizes and that will not happen until the man in the drivers seat is removed. It's like riding in a car with a drunk driver, there is an extreme measure of uncertainty.