It doesn't matter that they're from another country, that doesn't make it ok to enslave them. It doesn't matter that they're men either, they're still being forced to have sex against their wills even if it's for a wad of currency, that doesn't make it ok and it doesn't mean they consent. Saying he's hired some illegal aliens sounds significantly less evil then he's built a harem of male sex slaves but that's what they are and that's what has happened, that's how they're being used.
MSNBC Inside Secret America: American Sex Slave