Hah, curious, my first thought was, how is a law going to stop 2 people attracted to each other. But on second thoughts, if the maid knows there's no way she can get married/a passport by boinking the husband, she will find him less attractive.

And before the woke brigade shows up, yes in my -- hopefully not antiquated -- mind, status has a lot of influence in attraction, guys (well women too) want attractive mates to feel good about themselves and women find richer men attractive.