The father of Orlando mass shooter Omar Mateen has longstanding connections to prominent Islamist groups in the U.S., a document discovered by the Investigative Project on Terrorism shows. Seddique Matin is listed as president of a then-new American Muslim Alliance (AMA) chapter in Fort Pierce in a July 1997 announcement archived by the IPT.The AMA sponsored several radical conferences in the U.S. and its leader, Agha Saeed, has spoken in defense of convicted terrorists, including Aafia Siddiqui (a.k.a "Lady al-Qaida"), Palestinian Islamic Jihad board member Sami Al-Arian, and Pakistani intelligence lobbyist Ghulam Nabi Fai.The Fort Pierce chapter is among 10...