I worry the US might lose its status as the world leader in basically all areas. China may well seize the opportunity if the economy weakens significantly and theirs continues to climb again. Who knows what that might lead to...

I think this is the biggest longer term threat at the moment.

Kinda makes you think...this started in China and they may well be the main beneficiaries of it. What was that saying again in the JFK movie about who gains the most?