Any crackdown might come as an extention to the time to hold without redemption or a bigger early redemption penalty.

Alternatively they may take the position that we would pay for cc transactions as the IRS does, or reduce the fees it will pay the cc companies, which will certainly make a number of them not accept for points these transactions.

All these possibilities (probabilities) are too bad for us. Personally, I buy for investment balance and enjoy the bonus of points. From the article it is obvious too many people are abusing the buy and sell option. These "smart" people again will precipitate the loss of a good service to the rest of us. Both cc policies and Treasury policies are probable for changes.