Not really scary. It's better for superpowers to have intertwined economies, rather than be isolated. Less incentives for conquest and war.
I can have a chinese landlord gouging me for west coast rent but can never be a landlord in china.
I don't agree with Trump on pretty much anything except for his stance on Chinese trade.
There is an imbalance that needs to be addressed that is being completely ignored by the progressive candidates.
Not saying it will make me vote for the guy in 2020, but it will be a key issue for many others.
You can prevent foreigners from buying/owning land/property in US, but that will just lower the value of US dollars held by foreigners significantly and your currency will crash in value.
The foreigners already hold too much US dollars. The ship has sailed. You'll pay either way for enjoying the fruits of cheap foreign labor in the past. It's either devaulation of your currency, or accepting that foreigners will get a piece of US land.
A few companies and minority ownership stakes does not mean any super power owns the majority of another super power. That's a wide gulf.