OK, understand about passport control for Eurostar.
Going back to the Calais situation, are they immigrants or illegal immigrants (under French law), if they are illegal, surely they should simply be rounded up and put in detention centres to be processed by the French or given the option of a free one-way ticket back to where they came from?
PS, Welcome to the forum Tipi, it maybe worth you nipping over the welcome/Introductions section to say hello.
http://forum.survivaluk.net/forumdisplay.php?fid=86