Nigeria's House of Representatives approved the bill in a voice vote, likely sending it immediately to President Goodluck Jonathan for him to potentially sign into law in Africa's most populous nation. Whether he will approve it remains unclear, and both the United States and the United Kingdom raised concerns over a measure that could put foreign funding for AIDS and HIV outreach programs in jeopardy.

Nigeria's Senate previously passed the bill in November 2011 and the measure quietly disappeared for some time before coming up in Thursday's session of the House. Under previous versions of the proposed law, couples who marry could face up to 14 years each in prison. Witnesses or anyone who helps couples marry could be sentenced to 10 years behind bars.

Other additions to the bill include making it illegal to register gay clubs or organizations, as well as criminalizing the "public show of same-sex amorous relationships directly or indirectly." Those who violate those laws would face 10-year imprisonment as well.