consumer credit card debt

If the Fed bought good credit card debt ?
If the fed bought a percentage of credit card debt from the stressed middle class that had good credit ratings would that free up more consumer money.
Say for example buying 4000 dollars of an 8000 debt that the family paid 20% interest, then charged the family 6% on that money. The credit card company could handle the details.
yes, this is a question, your thoughts on the impact. This is to contrast the federal government buying alot of bad debt that taxpayers have to cover.
Could they just buy my mortgage and give me a fixed 30 yr 4% loan, oh and throw in some cash – I need some new furniture