Muslims teach and believe falsehood and teach worship to a false god. They are lost and need to be told the good news of Jesus Christ. By homeschooling their children, they will further perpetuate this falsehood.
That being said, Muslims, as American citizens, have every right, and should have every right, to homeschool their children. Suicide bombing, killing others for any reason, and hijacking are illegal and should remain so. If they are engaged in these activities, then they are breaking the law. Homeschooling, however, is not, and should not be against the law. This is NOT Nazi Germany--yet!