Chase Bank complaint

Just got a great notice in the mail from Chase Bank. They are informing me that they are raising my APR to 23% from 9.9%. The original rate was NOT an introductory rate, but a FIXED rate deal (supposedly). They are also saying that the rate change will apply to CURRENT AND FUTURE BALANCES. I looked up the provisions of the credit card accountability and disclosure act that was just signed into law and it supposedly prevents companies from doing this? I have never missed a bill...never been late...thankfully have a low balance (which I will pay off in full). But what happens to the people who can't get out of debt?? These people are nothing but crooks. Crooks with my tax money from Federal Bailout funds! This is actually written in the notice: "the principal factor we considered in amending your account is maintaining profitablity on your account". ARE THEY KIDDING ME?!! I have the option to close my account to avoid these changes. Great! Close my oldest credit card account which will then in turn lower my overall credit rating! ENOUGH!!!!! I'm doing my research and I am not taking this laying down. People will be hurt by these companies and it is wrong.