American Express (AXP)
American Express provides credit card services and other travel related services.
More affluent customer base than competitors (hopefully less defaults/bankruptcy claims)
Discover Financial Services (DFS)
Mastercard Incorporated (MA)
Citigroup Inc (C)
Dependent on the weak American economy. Has a good amount of exposure to defaulting loans.
Financials (From Yahoo!)
Market Cap: 48.87B
Div (Yield): 0.72 (1.70%)
Disclosure: I do not own shares in American Express.