A San Francisco judge is expected to announce today whether she will go ahead with plans to prevent a vote on a proposal to ban circumcision.
Judge Loretta Giorgi could strike the proposal from the ballot on the basis that it could not be passed anyway because medical procedures are the responsibility of states rather than individual cities.
Lawyers for the city of San Francisco have suggested the proposed ban of circumcision for underage males contravenes the US constitution.
Their comments come after a challenge to the ban from an interfaith group of Muslims and Jews on the basis that Californian state law prohibits individual city lawmakers from placing limits on procedures by medical staff.
Russell Crowe has described circumcision as "barbaric and stupid" in a venom-filled online debate on the subject.
The Australian Oscar-winning actor, known for courting controversy in media interviews, wrote on his Twitter page that it was immoral to circumcise male infants and said he would "take attentive parenting over barbarism".