Originally Posted by
RedSun
It was AmEx vs. Visa. Citi is just the 3rd party. With AmEx, you had little options to use other AmEx CCs. But with Visa, I can use any VISA CCs. It could be a win for VISA, but not for Citi.
This list disagrees. I have an AmEx card from another bank. It worked at Costco in the Costo/Amex days.
https://www.doctorofcredit.com/list-...-credit-cards/