“will highlight that the practice is a crime here.”
Whatever makes ya think immigrants care about what is a crime in your country?
They are just hauling their crap to your house.
5,0000 years of history only provided them a place to escape from and for you to deal with 5,000 years of their history.
Islamic law is Islamic law. The laws of the kufir don’t override the laws of the Islamists.
They will admit that slavery is not as fashionable these days but the Imam at Ask The Imam agree that the laws of Islam still hold.
Such is the “diversity” of the Religion of Intolerance. Welcome the wolf at your door at your own peril.