How the Koch brothers built the most powerful rightwing group you've never heard of
Americans for Prosperity is a little-known, billionaire-funded organization that has pushed US politics to the right. How did it happen?
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction: How the Koch brothers built the most powerful rightwing group you've never heard of

### Response: Americans for Prosperity is a little-known, billionaire-funded organization that has pushed US politics to the right. How did it happen?