Saudi arabia also has hordes of immigrants from afghanistan, Pakistan, and other extremist regions home to al qaeda.
They need to use some sense there as well. They are not only home to al qaeda but they are also getting people mostly from regions where al qaeda is very strong.
My buddy worked in Saudi for several years at the Riyadh airport. He used to talk at length about how dependent the Saudis were on foreign labor. He explained how the infrastructure was managed by many Americans and British and how Indians and Philippinos made up a sizeable portion of the low skill labor force.