In May, 1997, the government of Arlington County announced that the definition of eligible dependents under the County's employee health plan would be expanded to include one adult dependent, who could be the employee's spouse, domestic partner, or any other adult who was claimed as a dependent on the employee's federal income tax return. The County listed eight criteria for qualifying adult dependents: someone who "has resided with the employee for a 1 year period; shares with the employee the common necessities of life and basic living expenses; is financially interdependent with the employee; is involved with the employee in a mutually exclusive relationship of support and commitment; is not related by blood to the employee; is not married to anyone; was mentally competent at time of consent to relationship; is 18 years of age or older." Same-sex as well as opposite-sex domestic partners of County employees were subsequently covered by the expanded health care benefits.