What on earth are you suggesting? That unless an asylum seeker travels to Britain by Air on a direct flight it is another countries problem? It is the problem of the nation these people wish to reach but above all it is the problem of the nation state that they were born in. Globalisation is part of the problem as it creates a them and us economic framework and religion is the other as it seeks to control a huge number of people in a medieval way.
There are plenty of genuine pros and cons which are directly related to the EU and the debate would benefit if we focused on them.