An ethics approach is required, .
How would you perceive this to work? Wouldn't you need rule based underlying it?
You can't ban people on supposition.
I have a principles based guidelines in my profession. It still has underlying rules, because there's legislation in some aspects of my professional work, however it gives the standards committee more scope to fine/ban/exclude people for "bringing the profession into disrepute".
Do you mean principles based rather than ethics base?
I had an interesting conversation a couple of hours ago - apparently you now have "opponents" rubbing creams (steroids etc) on their hands then shaking hands with athletes, in an effort to get them to test positive.
I've said this many times, until the outcomes (likelihood and severity) of being caught doping outweighs the rewards, it will continue to be prevalent.