It happened again. Here at "Interfaith Voices," we got a second call from the State Department, asking if we would be willing to host a group of overseas visitors for a dialogue about interfaith relations and our public radio show. In February, our first visitors were Afghan clerics, both Sunni and Shiite imams. This time, it was a group of 10 African leaders from eight different nations: Benin, Burkina Faso, Cameroon, Malawi, Mali, Niger, Nigeria and Uganda. Most were Muslim.