 He worked with a marijuana task force to produce a report on licensing and regulation, which was released along with a letter of endorsement.In 2015, de Blasio repealed a requirement that mohels inform parents of the risks of metzitzah b'peh, an oral circumcision ritual that was linked to 17 cases of infant herpes, brain damage, and two deaths since 2000.The rule was passed by the city's Board of Health in 2012, which required parents to sign a consent form.