I agree with the majority of what you said, but couldn't let this pass. In fact, there are reprehensible clauses in constitutions on both sides of the Mason-Dixon line.Section 2 of Article XV goes on to prevent "persons of color" from setting foot within the territorial boundaries of the state.
Article XIV: The general assembly shall, at its first session under the amended constitution, pass such laws as will effectually prohibit free persons of colour from immigrating to and settling in this state; and to effectually prevent the owners of slaves from bringing them into this state for the purpose of setting them free.
Article 13 - Negroes and Mulattoes
Section 1. No negro or mulatto shall come into or settle in the State, after the adoption of this Constitution. Section 2. All contracts made with any Negro or Mulatto coming into the State, contrary to the provisions of the foregoing section, shall be void; and any person who shall employ such Negro or Mulatto, or otherwise encourage him to remain in the State, shall be fined in any sum not less than ten dollars, nor more than five hundred dollars.
Like anti-homosexual legislation, the key is not so much what's written down as how vigorously it's enforced.