I believe the Romans are importing African Priests to the US as well, though there is a fear that some are joining the priesthood for power and to escape poverty rather than from a true calling.
Asian Presbyterians, mostly Koreans, are traveling to Europe as missionaries. Imagine that!
This has nothing to do with importing priests from Africa. The ECUSA has no trouble recruiting priests right here from MoveOn.org and GLSEN. Since the legacy Anglican Church in the US, the ECUSA has effectively left the Christian faith to move to some Zen-Wiccan hybrid with incense and vestments, faithful Anglicans are simply looking elsewhere in the Anglican communion oversight. Search on Peter Akinola to understand why Uganda.