Section 11 (Nigeria public order and public security) and section 12 (Nigeria treaty implementation) of the Constitution of the Federal Republic of Nigeria 1999:
Nigerian Constitution Section 11: Public Order and Public Security
11.(1) The National Assembly may make laws for the Federation or any part thereof with respect to the maintenance and securing of public safety and public order and providing, maintaining and securing of such supplies and services as may be designated by the National Assembly as essential supplies and services.
(2) Nothing in this section shall preclude a House of Assembly from making laws with respect to the matters referred to in this section, including the provision for maintenance and securing of such supplies and services as may be designated by the National Assembly as essential supplies and services.
(3) During any period when the Federation is at war the national Assembly may make such laws for the peace, order and good government of the Federation or any part thereof with respect to matters not included in the Exclusive Legislative List as may appear to it to be necessary or expedient for the defence of the Federation.
(4) At any time when any House of Assembly of a State is unable to perform its functions by reason of the situation prevailing in that State, the National Assembly may make such laws for the peace, order and good government of that State with respect to matters on which a House of Assembly to be necessary or expedient until such time as the House of Assembly is able to resume its functions; and any such laws enacted by the National Assembly pursuant to this section shall have effect as if they were laws enacted by the House of Assembly of the State:
Provided that nothing in this section shall be construed as conferring on the National Assembly power to remove the Governor or the Deputy Governor of the State from office.
(5) For the purposes of subsection (4) of this section, a House of Assembly shall not be deemed to be unable to perform its functions so long as the House of Assembly can hold a meeting and transact business.
Nigerian Constitution Section 12: Implementation of treaties
12.(1) No treaty between the Federation and any other country shall have the force of law except to the extent to which any such treaty has been enacted into law by the National Assembly.
(2) The National Assembly may make laws for the Federation or any part thereof with respect to matters not included in the Exclusive Legislative List for the purpose of implementing a treaty.
(3) A bill for an Act of the National Assembly passed pursuant to the provisions of subsection (2) of this section shall not be presented to the President for assent, and shall not be enacted unless it is ratified by a majority of all the House of Assembly in the Federation.