Wayne LaPierre, the chief executive of the National Rifle Association. He has been a leader in an aggressive campaign by gun rights advocates to influence the White House.

N.R.A.’s LaPierre Asks Trump to ‘Stop the Games’ Over Gun Legislation in Discussion About Its...

Even before the launch of a formal impeachment inquiry, the influence of Wayne LaPierre, the N.R.A.’s chief executive, on Mr. Trump has been clear.

nytimes.com