Elf Bar and other e cigarette makers dodged US customs and taxes after China's ban on vaping flavors San Diego Union Tribune California Proposition 31: Banning flavored tobacco products California flavored tobacco ban loophole may be putting teens, kids at risk ABC7 San Francisco Laws restrict U.S. shipping of vape products. Many companies do it anyway. The Washington Post US Supreme Court rejects challenge to California flavored tobacco ban Reuters Federal flavor ban goes into effect Thursday, but many flavored vape products will still be available