三个原因吧。
一是美国的经济问题,工厂外迁,非法移民抢底层工作。
二是女人当美国军队总司令还不到时候。
三是轮替到共和党了,有很多肥肉职位啊,各国大使,各个政府职务等等。
一个很好的解决办法是北美的加拿大美国墨西哥统一成为一个国家。有加拿大的福利制度,美国的先进技术,和墨西哥的穷打工仔。You are right but it's more than that. America and the world is indeed at a cross road. There will be no return no exit if the current trend continues.
Britains pulled the brake through Brexit and Americans pulled the same brake one more time. It is time to make a U-turn but, sadly, I don't think that is going to happen.