Wanniski, who invited Farrakhan to a conference last spring, argues that a Republican-nation alliance could guarantee an unbeatable electoral majority for the GOP.
Farrakhan was not invited to the conference by Wanninski. 
mnli hypothesis: Farrakhan was not invited to the conference by Wanninski.  premise: Wanniski, who invited Farrakhan to a conference last spring, argues that a Republican-nation alliance could guarantee an unbeatable electoral majority for the GOP.