By Ndubuisi Ekekwe There is a great debate on the sovereignty of monetary policies of nations like Nigeria when Facebook Libra cryptocurrency takes off. Libra could become a supranational bank, removing the capacities of central banks to use many tools to drive policies. The implication is massive as welfare losses can skyrocket in some economies. Libra is not a Bitcoin competitor; it is Naira, Cedi, Rand, etc competitor. Nigeria’s National Assembly should debate Libra urgently for a plan of action….