The basic question being asked in this BBC discussion is:
"Could foreign wrestlers who take on British citizenship increase the chances of GB collecting more medals? Should we encourage sportsmen and women from other countries to compete for GB?"
There is an issue with foreign wrestlers who've been brought in to train British hopefuls actually competing for Britain. It seems wrestling has rather lax rules in this regard anyway. A cynic might say this is Britain belatedly taking an interest in proper wrestling (rather than the comedy variety) just because there's a London Olympics coming up, in an attempt to increase our medal count and credibility, but I am sure that;s not the case at all.
What really annoys me is the confusion of this issue (and the BBC is guilty of this in the link) with the general question of "should people not born in Britain be allowed to compete for the country", with Mo Farah's case again being brought up where, in fact, it's completely separate.
It's one thing some countries, or sports within those countries, touting for foreign talent to boost their international status and, on the other hand quite another to see athletes who are as British as anyone by naturalisation etc competing and excelling for their country.