According to the Philip Sutton article, immigration officials asked questions of immigrants--something that almost all of the posts here deny.  The Philip Sutton article does not mention name tags, which most posters here say is one of the main reasons why mistakes couldn't be made.

 

And, the article concedes mistakes could have been made on the ship manifest at point of origin for a number of reasons, but it insists, despite questions being asked, no name tags, language difficulties, and a constant stream of immigrants leaving little time for accuracy, NO mistakes (well, one, sort of) were ever made.  Bravo!