I am thinking about importing two Russian brides. 
The mailorder catalogue says they can cook, clean etc etc and they dun argue either.. since they dun understand inglish. ahhh a husband’s dream came true.
PS: anyway, seriously it’s utterly idiotic cuz clearly the person is marrying to achieve a higher social status. The downside, as Ostrich already mentioned, once they achieve it, they look for a way out. There is an other aspect, since bride will have an upper hand in this sort of relationship, some families from brides side also take undue advantage of this situation. In relatioships like this minor disputes can lead to something disastrous, since one of the side may take it as a way out, instead of trying to solve disputes.