Check out pictures of these migrant boats, they are coming from all over Africa and maybe a bit into the Middle East.
http://news.yahoo.com/eu-leaders-boost-rescue-operations-migrant-boat-disaster-160319834.html (picture on this webpage or just search for “Migrant Boat Mediterranean”; though where they come from doesn’t really change matters much. There’s tons of them coming.
Deport these “immigrants” back from whence they came. If they return, shoot them. That would put a crimp in their invasion.