I agree this is a farm more urgent and important issue than immigration- but hey ho!
The simple truth is there is money to be made by wicked people in all this.
A recent Channel 4 documentary covered an undercover operation and managed to uncover a massive world wide series of drug cartels. The Netherlands, Dubai and the UK were all involved in this operation and were thankfully busted.
Interestingly, the main perpetrators were white, fat middle aged men living on new build estates, just like the police officer in charge of the whole thing, as he commented at the end of the series.
Now I can't see two such men sitting on a park bench or sitting outside a local pub without thinking, 'I wonder what they're up to?' They live among us...