McCain's lobbyist problem spotlights unpopular crowd
With strict new ethics rules and a clearout of top aides, Republican John McCain is battling to avoid being tainted by Democrats as a Washington insider in thrall to big business.
At least five senior staffers have parted ways with McCain's White House campaign in recent days, after the Arizona senator clamped down on lobbyist activity that might pose a conflict of interest with his presidential bid.
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