We have deployed F-22's for the first time ever. If Russia can annex Crimea, I'm sure China can annex Taiwan. The US government can't even secure its' own Capitol for FFS. I wouldn't be surprised if Taiwan is already infested with sleeper agents from the PLA. We spent almost 7 trillion dollars trying to secure Afghanistan. It was a big failure. I think the only way to defend Taiwan is the nuclear option in the straits. Just give them the bomb. Europe was loaded with nukes during the Cold War. All NATO countries were nuclear capable even if they didn't have them nationally. They could be loaned out.
If this area turned into a shooting match, you can expect prices of goods to go through the roof. And ration books.