02/08/2022
The current bar requires that no immigrant or work visas be issued to Nigerian citizens, and doesn’t specify where they might be living. This bar is, apparently and supposedly, based on security concerns. Tourist/business visas are unaffected (which makes one wonder why and how tourists are somehow more reliable and/or secure than immigrants).
The fiance K1 visa is a nonimmigrant visa, so it should be unaffected by this bar.