Restrictions on immigration and visitation have been in place for decades in the name of security and public health, but recently they have become a point of contention, particularly in the United States and many European nations. As terrorist attacks have proliferated around the world, security restrictions have tightened, resulting in an outcry that travel bans are discriminatory and racist. Is it better to be safe than sorry? Are travel bans such as Executive Order 13769 more about politics than security? A wide array of authoritative voices offers their perspectives on this timely and far-reaching debate.