Liberia

a. All persons who, on the coming into force of this Constitution were lawfully citizens of Liberia shall continue to be Liberian citizens.
b. In order to preserve, foster and maintain the positive Liberian culture, values and character, only persons who are Negroes or of Negro descent shall qualify by birth or by naturalization to be citizens of Liberia.
c. The Legislature shall, adhering to the above standard, prescribe such other qualification criteria for the procedures by which naturalization may be obtained. (Art. 27)

Any person, at least one of whose parents was a citizen of Liberia at the time of the Person’s birth, shall be a citizen of Liberia; provided that any such person shall upon reaching maturity renounce any other citizenship acquired by virtue of one parent being a citizen of another country. No citizen of the Republic shall be deprived of citizenship or nationality except as provided by law; and no person shall be denied the right to change citizenship or nationality. (Art. 28)

The Legislature shall have the power:
…
h. to establish laws for citizenship, naturalization and residence;
… (Art. 34)