Demand for US-born imams up as mosques struggle to retain new generation of American Muslims
ANAHEIM, Calif. — Mustafa Umar, an imam in Southern California, is popular with the Muslim teenagers who attend his mosque. They pepper him with questions about sensitive topics like marijuana use, dating and pornography. Umar, 31, is a serious Islamic scholar who has studied the Quran in the Middle East, Europe and India — but…