More than 500 people, including many families, from African countries have been detained crossing the U.S.-Mexico border, since May 30, the U.S. Customs and Border Protection agency said.
One individual was accused of having sex with an inmate.
A brief fight between two inmates and two Louisiana State Penitentiary guards spilled over into an ongoing prison strike Wednesday.
Angola has rejected previous Portuguese prosecutions as "neo-colonialism."
The Angolan president will not run for re-election in August.
José Eduardo Agualusa is the first Angolan to be nominated for his novel about the country's deadly civil war.
Chinese travelers in Angola have carried the virus home, raising fears of an outbreak in Asia.