How to describe trump... Xenophobic (Generally dislikes all other nations and nationalities.), Homophobic (Opposes same-sex marriage), ignorant (Doesn't know anything about core-issues like the Nuclear Triad.) and he is selfish, only thinks (And talk it seems) about himself.
I will laugh at the USA if he gets elected, not that our current political climate is anything great here in the land down under... But things can change before next year with some luck.
The one thing that annoys me is how he wishes to "pull" defense back from key area's, which shows his ignorance of geo-politics.
Let's say he pulled all the troops from South Korea... North Korea could then potentially invade the South, that would give a nut-case like Kim access to South Korea's technology prowess, essentially accelerating North Korea's technology 50+ years, that would then give the North capabilities to launch Nuclear Weapons at the USA.
That also removes a counter-balance in Asia to combat China and it's allies, giving China a greater sphere of influence and a decline in the USA's, allowing China more control over the world market, it's prices and trade routes, not a good situation for the USA to be in.
We have already seen what the USA's decline has done in some parts of the world such as Africa, it has allowed the USA's competitors (like China) to move in and start claiming the resources for themselves, again, another situation the USA doesn't wish to be in, China having more resources.
Fact of the matter is, the USA will NEVER be able to beat China on Manufacturing, they lost that after being on top for 110 years, the world is a much larger market than just the USA now, there are more consumers than ever before.
Unless the USA intends to strong-arm the entire planet to buy it's stuff... Well. You know, whatever attempts at making themselves the largest country in terms of manufacturing (And general growth) is just not going to work, not when Billions of other people keep buying from China.
But that does not mean everything is lost, the USA is "moving away" from manufacturing, and other sectors such as Technology, R&D, services, mining, oil are gaining more relevance, complete with higher wages and a higher standard of living. (Australia has already gone through this process and came out stronger for it, it is what helped us avoid a recession.)
This isn't a bad thing, rather an opportunity. What *could* happen though is that you could start investing in China's counter-balance on the world stage, namely India who is ripe for an Industrial revolution and is also an ex-British colony, democracy and an Ally to the USA, Europe and the Western world.