No person related within the second degree of affinity, or within the third degree of consanguinity to any elected officer of the City, or to the City Manager, shall be appointed to any office, position or clerkship or other service of the city. This provision shall not apply, however, to any person who shall have been employed by the city six months prior to and at the time of the election of the Mayor or Councilmember, or appointment of the City Manager, so related to him or her, in accordance with the laws of the State of Texas.