Yesterday, as part of its ongoing efforts to prevent the use of e-cigarettes by children, the FDA announced that it cited 40 retailers for violations related to the sale of JUUL e-cigarettes to children.  The FDA sent the retailers warning letters.  

The FDA said that it has been "conducting a large-scale, undercover nationwide blitz to crack down on the sale of e-cigarettes -- specifically JUUL products -- to minors at both brick-and-mortar and online retailers.  The undercover operation started April 6th and is expected to continue through the end of the month.