WASHINGTON — The e-cigarette and cigar industries have enlisted high-profile lobbyists and influential congressional allies in an attempt to stop the Food and Drug Administration from retroactively examining their products for public health risks or banning them from the market.

The campaign targets a broad new rule that extends F.D.A. jurisdiction to include cigars, e-cigarettes and pipe and hookah tobacco.

The bipartisan effort has featured a former senator who did not register as a lobbyist before going to work for the cigar companies and a former Obama administration official, now a private consultant, who is trying to undo his earlier work reviewing the rule. In addition, one member of Congress introduced industry-written legislation without changing a word of it.

The battle shows how, nearly two decades after the $200 billion settlement between tobacco companies and state attorneys general to compensate the public for health consequences of smoking, the industry still wields extraordinary clout in Washington.