Zeller credited Gottlieb for advocating for the nicotine regulation within the Trump White House, after the Obama administration had fallen short. Obama officials had promised Zeller they would back rules to curb nicotine and menthol.

The US Food and Drug Administration is proposing limits on the level of nicotine in cigarettes and some other types of tobacco products, such as cigars and pipe tobacco, in order to make them less addictive,

The move could help millions of Americans quit smoking while preventing many more from becoming addicted. The proposed rule, published Wednesday in a 334-page report, would cap nicotine levels in cigarettes and other tobacco products,