American Express is launching a new card for business owners with simple cash back rewards on every business expense. Amex already offers a significant number of small business credit cards, designed for everything from  luxe travel benefits to simple cash-back rewards. Now, you’ll have the option to earn an unlimited 2% flat cash back and more using the American Express Graphite™ Business Cash Unlimited Card. Here’s more about the new Amex Graphite Business card and whether you should consider it for yo ...