Originally Posted by radonc1

I find it hard to believe that Amex or any other card purveyor does not have intimate knowledge of our spending habits. My wife's Amex cards (plat and Hilton) have both been hacked in the past 3 months and Amex fraud picked up the discrepancy in spending immediately. The hackers had done the usual $1 charge to see if the card worked and Amex let that sail, but as soon as they tried using it for a real charge (of between $100-300), it was denied immediately and I received alerts from them. They knew that the items the hackers were buying on-line were not in her spending history, so the algorithm just kicked it out.

So if your mother has a CL of $3k, you can bet that as soon as she starts spending $25K a month, rat's eyes are going to bulge :
Amex didn't give a CL of $3K/month for no reason at all. I would be very cautious pursuing this line of MS.