Via a Greg Anrig retweet of a tweet from Catherine Crier:
U.S. Letter of Resignation Sent By Bush to Rifle Association. NY Times (1995): Following is the letter of resignation sent last week by former President George Bush to the National Rifle Association: May 3, 1995
Dear Mr. Washington,
I was outraged when, even in the wake of the Oklahoma City tragedy, Mr. Wayne LaPierre, executive vice president of N.R.A., defended his attack on federal agents as "jack-booted thugs." To attack Secret Service agents or A.T.F. people or any government law enforcement people as "wearing Nazi bucket helmets and black storm trooper uniforms" wanting to "attack law abiding citizens" is a vicious slander on good people. ...
Both John Magaw and Judge Freeh were in office when I was President. They both now serve in the current administration. They both have badges. Neither of them would ever give the government's "go ahead to harass, intimidate, even murder law abiding citizens." (Your words)
I am a gun owner and an avid hunter. Over the years I have agreed with most of N.R.A.'s objectives, particularly your educational and training efforts, and your fundamental stance in favor of owning guns.
However, your broadside against Federal agents deeply offends my own sense of decency and honor; and it offends my concept of service to country. It indirectly slanders a wide array of government law enforcement officials, who are out there, day and night, laying their lives on the line for all of us.
You have not repudiated Mr. LaPierre's unwarranted attack. Therefore, I resign as a Life Member of N.R.A., said resignation to be effective upon your receipt of this letter. Please remove my name from your membership list. Sincerely, [ signed ] George Bush