Although Nigeria has been active in signing and ratifying international human rights treaties, it has seen challenges when trying to implement these treaties domestically. Nigeria operates under a dualist system and cannot apply international treaties unless they are ratified by the legislative houses in Nigeria. Furthermore, the Nigerian constitution protects civil and political rights, but international treaties like the African Charter also expand protection to cultural, socioeconomic, and group rights. Because the Nigerian constitution is supreme law, the Supreme Court of Nigeria often resolves conflicts in favor of the Constitution, therefore restricting the expansion of potential human rights.