Muhajirun is the name of the Jihadi who wages war against the infidels by immigration to other countries. The fact that the birth rate for muslims is over 4 times that of current American citizens means that even a small amount of immigrants hostile to America can come here and multiply rapidly, overwhelming our social services and demanding changes to our way of life. Not to mention how easy it is for Muhammad Muhammad the fighter to disguise himself as a civilian. Only trouble can come from this. Get ready.