If Taiwan were to have nuclear weapons, as you mentioned, Taiwanese passports would not be able to travel to any country or place immediately. Your children studying in the US and Western countries would be immediately deported to Taiwan, and all your assets in Western countries would be seized for investigation. Taiwan would only have international friends such as Russia, Iran, China, and North Korea if it had nuclear weapons. The US, UK, EU, ASEAN, Japan, South Korea, NATO, and the UN would immediately boycott Taiwan. They would not allow any materials to be imported or exported to Taiwan, and Taiwan would not be able to trade in US dollars. Taiwan's GDP would plummet by 3000% immediately. The US government punished Taiwan in the 1980s when Taiwan was preparing to produce its own nuclear weapons. The penalties on Taiwan were severe enough to make the US government pay extra attention to Taiwan's "evil" intentions and prevent them from getting out of hand until now and forever.