What I hate about Costco, it TW, is that just like in the US you can only use a co-branded CC there. (OR AmEx, unless that has changed)
As a non-citizen of TW, it is impossible to get one on your own. Usually the banks even say it is against the law to give foreigners a CC. After I called them on it, CathayUnited says they will let foreigners get a card, through their spouse, but they have to supply like 3 years worth of information from their home country and Taiwan.
I can understand the reasoning for this, but the reasoning is flawed. They claim it is easy for foreigners to just leave the island abandon the debt, and never come back. But, my wife is a US citizen AND ROC citizen. She can do the same. It just makes no sense.