Since when did the UK sign up to be the solver of all other countries problems? It barely has enough resources to look after it's own let alone poor uneducated immigrants from other countries.
A points system similar to Australia, Canada & New Zealand is long over due, if they can ask immigrants what positive influence they will bring to their community why can't we?
Why can't we expect a certain level of Education, Adaptability (level of eduction), Language Ability (reading, writing, speaking, listening), Secondary Language (reading, writing, speaking, listening), Work Experience (skilled worker & time served) and also ask if you have been convicted of a criminal offence?
As asking immigrants what positive influences/aspects they will bring to the UK (before allowing entry) seems to offend some on here how about just arming our boarder control agents or employing ex-military sharp shooters to patrol the boarders?
We could paint a red line on Calais side of the tunnel and issue them with a "shoot to kill" policy, anyone crossing the line becomes fair game. I guess you would really see how desperate they are to enter the UK then.