When is David Cameron going to close our porous borders???

http://www.express.co.uk/news/uk/584551/shocking-moment-gang-migrants-smash-into-lorry-heading-UK-dover-at-French-port-Calais And why hasn't the British government offered help to the French? Why are the diversity bragging about being offered such easy access to the UK? Why is David Cameron ignoring the issues and leaving us with a truly nightmare jobs market??