Final answer:
The statement is true. In 2015, the U.S. spent $218 billion, or 6% of the federal budget, paying for interest on the debt.
Step-by-step explanation:
The statement "In 2015, the U.S. spent $218 billion, or 6% of the federal budget, paying for interest on the debt." is true.
The information provided in the references confirms that the U.S. government did spend $218 billion, which is approximately 6% of the federal budget, on interest payments on the debt in 2015.