WHY DID THE STATE TAKE MY INCOME TAX REFUND OR OTHER FEDERAL PAYMENT(S) TO REPAY MY OVERPAYMENT?

If the department has not received a written repayment agreement and a payment on a food assistance overpayment within 30 days from when the overpayment was created, the claim is considered delinquent. If a valid written repayment agreement has not been submitted after 120 days, or if payments are not made as agreed, the overpayment is submitted to the federal Treasury Offset Program (TOP) for recovery, which includes interception of federal payments, such as income tax refunds and social security payments. If you have questions regarding a TOP intercept, please contact our TOP hotline at 1-800-226-8007.

Question: 
WHY DID THE STATE TAKE MY INCOME TAX REFUND OR OTHER FEDERAL PAYMENT(S) TO REPAY MY OVERPAYMENT?