Card makers jack prices in face of new regulations
                                
                                
                                    (Newser) -
                                    Interest rates are tumbling for US Treasuries, companies, and home-buyers. The prime rate is extremely low. Yet for some reason, credit card companies are charging more and more, with average rates hitting a nine-year high of 14.7% in the second quarter, the  Wall Street Journal  reports. Companies say they’...