John Onaiyekan: Nigeria 'Uninhabitable' For Young People
Cardinal John Onaiyekan said that if he were the president he would resign.
He criticised officials for focusing only on their own lives - building mansions and travelling the world.
The 75-year-old cleric said he felt ashamed when he saw trafficked Nigerian women soliciting on the streets of Rome and other Italian cities.
Cardinal Onaiyekan was speaking to the media ahead of a church gathering to address migration, taking place in the Nigerian capital on Tuesday.
There are huge risks involved in making the journey to Europe across the Mediterranean
In February, President Muhammadu Buhari won re-election in Nigeria, Africa's largest oil producer where about a quarter of the working age population is unemployed.
Many thousands of Nigerians have attempted the dangerous journey across the Sahara and over the Mediterranean to reach Europe in recent years.