A 24-year old Arab-American was convicted Tuesday of joining al-Qaida and plotting to assassinate President Bush. Houston native Ahmed Omar Abu Ali was tried after spending nearly two years in a Saudi Arabian prison, where he says was tortured into making a confession. Two doctors who examined him corroborated his claim. Abu Ali moved to Saudi Arabia to study Islam in the year 2000. He was arrested three years later while taking final exams at the Islamic University of Medina. He’ll be sentenced on February 17, and faces life in prison.