Outlaw banks from charging more then 6% interest for credit cards.

Their is currently no limit to how much banks can charge consumers for credit cards. The current average credit card interest rate is 21% for cash back credit cards, 14% for all other cards, and 30% penalty rate from the biggest issuers Citi & Chase. This is usury and takes advantage of the poorest people who have little money to begin with, and is the #1 cause of bankruptcy in the US. It costs the banks less then 1% to process the credit cards and merchants pay 1.5% or more when credit cards are used so there is no reason to charge more then 6%. The government shall put a limit of 6% interest on the use of credit cards and no more then 12% for overdue interest.