A fine distinction

Lynton Crosby, aka the wizard of Oz, is coming under pressure over his twin roles as a commercial lobbyist and as an adviser to the Prime Minister.  The Observer explains the background but I urge you to admire the sophistry inherent in the Conservative Party's defence of the position:

A Conservative party representative said: "The position is very clear. Lynton Crosby gives political advice to the prime minister and the Conservative party. He does not lobby the government, or advise on government policy.

Yeah, yeah, as clear as mud.