The most profitable issuers of credit cards in the United States last year were American Express, Bank of America, Capital One, Citigroup, Discover Financial, JPMorgan Chase, Synchrony Financial, U.S. Bancorp and Wells Fargo. They earned a combined $60.22 billion in pretax net income from their card businesses, up 147.9%, an increase of $35.92 billion versus 2020. These nine companies had a combined $64.09-billion allowance for anticipated loan losses as of year-end 2021, down $26.10 billion. This was a decline of 28.9% from 2020. American Express’s pretax segment income for its Global Co...