Why do we need to help Taiwan if China wants it back by faorce?

Question

Why careS?
Isn't it domestic ?
Why do we keep selling Taiwan our secondary weapons?

Answer 1

We signed a treaty with them. Simply as that, we must stand by our friends

Answer 2

You must care - or else you wouldn't have posted this question twice. The U.S. keeps selling the "Republic of China" older weapons (France does too), because they are a good customer with a large percentage of their budget set aside for this very reason. The R.O.C. also produces some of its own weapons.