Again it depends on the state. I'm not sure what the count is (here in the US) but the last I checked it was around 35 states that required clergy to report with the other 15 either not specifically mentioning it or not addressing it in their laws.
In states where there is mandatory reporting, privilege is not provided for child abuse cases.
Here's a nice summary: http://www.childwelfare.gov/systemwide/laws_policies/statutes/clergymandated.cfm
Given the problems with religious organizations and child molesters, I hope the remaining 15 states follow the other 35 and mandate that clergy report these horrible crimes and protect the the children within their flocks.
To be fair, this issue is way bigger than just the little WTS. With only about 1 million members out of 300 million people in the US, there are far bigger fish to fry.