the decision to make them compulsory or not is debatable.

No it isn't, Ake. ANY testing of ANY sort on feeling, thinking human beings HAS to be voluntary. Anything else is an infringement of human rights. You know the old poem, First they came... Well, this is exactly the same. Once you start compulsory testing on ANY group of people, no matter how well intentioned, it will end in who knows what. The trick is to never start the ball rolling.

D.