A little geo-political discussion here: What is more important 1) to support the defense of Ukraine or 2) to support the defense of Taiwan?
Some stats:
Population GDP Area
Ukraine 33,443,000 (2024 est.) 189.827 billion 603,628 sq.km (233,062 sq. miles)
Taiwan 23,894,394 (2022 est.) 751.930 billion 36,197 sq.km (13,976 sq. miles)
Per Capita GDP Per Capital GDP (PPP) Gini (2022/23) HDI (2021/22)
Ukraine 5,759 (2025 est.) 20,756 25.6 0.734
Taiwan 32,339 (2023 est.) 72,485 34.2 0.926
United States 86,601 (2024 est.) 86,601 41.6 0.927
Active Personnel Reserve Personnel Budget
Ukraine 1,260,000 2,700,000 64.8 billion
Taiwan 150,000 1,657,000 19.1 billion
Now, probably the most significant factor is who are their neighbors. In the case of Ukraine, it borders the NATO countries of Romania, Hungary and Poland and the non-NATO countries of Russian, Belarus and Moldova (and Transnistria). One can argue that it is a gateway to NATO and the EU.
Taiwan only borders China. It is a distance over water to the Philippines or South Korea or Japan. Much further to Australia and New Zealand.
Therefore one can make the argument that Ukraine’s geo-political position is far more significant than that of Taiwan.
One can, of course, make the argument that they are both significantly important for U.S. national security.