>>212667705italy has a far easier job and a far greater justification for doing so given
a. it's explicitly a state for the italian people and always has been, and also happens to be the ethnic homeland of the italian people vs the usa that has, at best been a broadly european ancestry state composed of numerous european ethnicities (not to mention african and american indian genetic stock that goes back 400 and thousands of years respectively)
b. the africans have been there for far less time
c. possibly most importantly they have jus sanguinis citizenship laws rather than jus soli citizenship laws - that is that who is a citizen of the country is constituted by the who is your bloodline (ie in their case italian) rather than what we have in the usa where it is citizenship based on where you are born
in a legal, ethical, logistical, and moral standpoint it is far easier to deport africans from italy than for us to do so