This is a paper delivered by Ekklesia associate Vaughan Jones to the inaugural meeting of the Westminster Forum, looking at the ethics of migration, and whether immigration controls are in fact practical, expedient, realistic, necessary or moral. If there is a crisis, whose is it? Should be pursuing a long term policy of the opening up of our borders? The intimate historic dependence of Christianity on people movements, and the prophetic biblical call for justice toward sojourners and strangers is basic to the author's perspective. Vaughan Jones is director of Praxis, a multi-agency initiative working with displaced people in London. He is a United Reformed Church minister.