More: The donation, which came through a Reynolds subsidiary and brings to $8 million the total donated by the subsidiary to MAGA Inc., the Trump-backed super PAC, was revealed in a campaign finance report filed Wednesday night.

The donation came on April 30.

Two days later, a top executive at Reynolds and two lobbyists who represent the company had lunch with Mr. Trump at his golf club in Jupiter, Fla. Also attending were two executives from Altria, another tobacco company.

At the lunch, the tobacco industry representatives expressed dissatisfaction with the way the Food and Drug Administration was regulating the industry, as The New York Times reported last week.

Mr. Trump interrupted the conversation to call Dr. Marty Makary, the F.D.A. commissioner.

When Mr. Makary did not answer, the president dialed Dr. Makary's boss, Health Secretary Robert F. Kennedy Jr., and another top health official, Dr. Mehmet Oz, the head of the Centers for Medicare and Medicaid Services.

The president complained to the men about the F.D.A.'s regulation of e-cigarettes, according to three people briefed on the meeting who were not authorized to discuss it.

Less than one week later, the F.D.A. issued new guidance that could pave the way for major tobacco companies to begin selling flavored vapes and to snare a chunk of the $6 billion e-cigarette market away from illegal Chinese competitors.