Nigeria will work to fix security lapses that led to a US curb on immigration from the country, President Muhammadu Buhari has said.
Mr Buhari said he wants Nigeria, Africa’s most populous nation, to have “productive relations” with the US.
He has appointed a minister to lead a committee to “study and address” the new visa requirements.
Citizens from Eritrea, Sudan, Tanzania, Kyrgyzstan and Myanmar are also barred from certain types of US visas.
People from these countries will, however, still be able to visit the US as tourists.
In 2018, the US issued more than 8,000 immigration visas to citizens of Nigeria – twice as many as all the other five nations combined.
That same year, just over 2,000 were issued to Sudanese nationals, 290 to Tanzanians, and just 31 to Eritreans.