Originally Posted by
Gadot
It is not the "charge amount" (unless you are putting your new BMW on the card) but the "place" Chase and Amex even do it for their best (ie centurian) customers.
I will say that in the US there seems to be much more "concern" among credit card issuers about flagging frauds or so called frauds. It is a rarer even in Canada (and that includes Amex Canada). Take it from someone who has worked in the industry.