Nigerians with valid visas stopped from entering the us embassy denies

It's unfortunate to hear that Nigerians with valid visas were stopped from entering the US Embassy. This is a serious issue that requires clarification and resolution.

Can you please provide more context or details about this incident? For example:

1. What was the purpose of their visit to the US Embassy?
2. Did they receive any official communication or explanation from the embassy or US authorities?
3. Were they denied entry due to any specific reasons or concerns?
4. Have they been able to resolve the issue or are they still facing difficulties?

I'll do my best to help you understand the situation and provide guidance on how to address it.