Why is a social security number needed when I purchase or apply for fishing and hunting license?

North Dakota is required by state and federal laws related to collection of child support, to record social security numbers from persons obtaining hunting, fishing, or other recreational licenses. The social security number serves as your principal identification number to determine license eligibility and preference in North Dakota. This information is kept confidential; however, it may be provided to law enforcement agencies and the State Disbursement Unit to enforce child support obligations. The citations for these laws are North Dakota Century Code 20.1-03-35 and 42 US Code 666 (a)(13) and (16).