According to Robert Spencer, Siraj Wahaj has “warned that the United States will fall unless it “accepts the Islamic agenda.” He has lamented that “if only Muslims were clever politically, they could take over the United States and replace its constitutional government with a caliphate.” In the early 1990s he sponsored talks by Sheikh Omar Abdel Rahman in mosques in New York City and New Jersey; Rahman was later convicted for conspiring to blow up the World Trade Center in 1993, and Wahaj was designated a “potential unindicted co-conspirator.”