San Francisco Mayor Urges Chinese President to Stop Flow of ‘Zombie Drug’ Fentanyl San Francisco’s Mayor, London Breed, has taken a strong stance against the illegal drug trade, specifically targeting the flow of fentanyl from China to the United States. As the city grapples with a deadly epidemic, Mayor Breed has expressed her intentions to discuss this pressing issue with Chinese President Xi Jinping at the ongoing Asia-Pacific Economic Cooperation (APEC) meeting.