Whenthe new immigration minister James Brokenshire attacked what he called the "wealthy, metropolitan elite" for benefiting from cheap foreign labour, it's unlikely he meant to point the finger at the Prime Minister.
But his words have now come back to haunt the government, after it emerged the Camerons had hired a Nepalese woman as a nanny who later gained British citizenship.
She had put Samantha Cameron down as her employer but there was no special pleading on her behalf.
Do these domestic arrangements really matter politically? Well, it shows what a sensitive subject immigration continues to be - and why getting the tone right can be tricky.
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A bid by the Government to delay publishing its plans to tackle air pollution until after the election has failed at the High Court.