I am reading Randy Peterson's Mileage Pro, and in the section on credit cards and points it refers to multi-program cards. The book explains that these cards can be exchanged into miles and points for multiple participating airlines and hotels. I am interested in a card that will allow 1:1 conversion into United.

However, looking at AMEX in particular, the book refers to the "American Express Preferred Rewards" program, p. 49. Yet there is currently no such card. I found AMEX Membership Rewards' site. But it appears not allow conversion from points earned in its program directly into airline programs.

Can anyone please clarify if there actually is a current AMEX program that allows 1:1 conversion? If so, can you post the right AMEX link for me to look into?

Thank you.