Did the Credit Card Act of 2009 Drop the Ball on APR Increases?

Months before the Credit Card Act of 2009 went into full effect this year, credit card companies hiked the APR on millions of cardholders across the country. Now credit card companies can still raise cardholder's APR pretty much at will but it will only affect the future balance on the account, leaving the previous balance under the old APR. A small victory for cardholders, but it doesn't feel like much of a regulation in the long run.

Credit Card APR Increases; Did the Credit Card Act of 2009 Make a Difference?