Facing re-election to the National Rifle Association’s board of directors, anti-tax activist Grover Norquist is mounting a vigorous fightback against conspiracy theories linking him to the Muslim Brotherhood, writing in a letter to fellow board members that he’s the victim of a smear campaign by anti-Islam activist Frank Gaffney, with whom he has been embroiled in a long-running feud.

In the letter, obtainedby the conservative website Breitbart News, Norquist calls the Center for Security Policy president and Reagan-era Defense Department official a “stalker” who “spins conspiracy theories” that Norquist is gay, a Muslim, and responsible for the Bush administration’s foreign policy blunders. “For the record, No. No. and No,” Norquist responded. “One of his staffers told me I was part of the Russian Jewish Mafia. (Also no, but I think that would pay better.)”

Referring to a recent report by conservative journalist Lee Stranahan, who criticized Norquist family members’ pro-Palestinian activism and highlighted questionable financiers of Norquist’s Islamic Free Market Institute, the Americans for Tax Reform founder wrote that Gaffney allies’ campaign against him had “risen to a new level.” Norquist noted that the American Conservative Union’s board has unanimously condemned Gaffney’s charges of his Islamist ties as “reprehensible” and “unfounded.”

“There have over the years been death threats from hopefully harmless idiots who follow Gaffney,” Norquist wrote in his letter. “The authorities have followed up on ones that pass their threshold of specificity. My goal is to respond to any real concern any real person has without exciting the crazies. They feed on attention as it makes them think they are not nuts.”