Barack Obama has rewarded some of his most active campaign donors with plum jobs in foreign embassies, with the average amount raised by recent or imminent appointees soaring to $1.8m per post, according to a Guardian analysis.

The practice is hardly a new feature of US politics, but career diplomats in Washington are increasingly alarmed at how it has grown. One former ambassador described it as the selling of public office.

On Tuesday, Obama’s chief money-raiser Matthew Barzun became the latest major donor to be nominated as an ambassador, when the White House put him forward as the next representative to the Court of St James’s, a sought-after posting whose plush residence comes with a garden second only in size to that of Buckingham Palace.

As campaign finance chairman, Barzun helped raise $700m to fund President Obama’s 2012 re-election campaign. More than $2.3m of this was raised personally by Barzun, pictured, according to party records leaked to the New York Times, even though he had only just finished a posting as ambassador to Sweden after contributing to Obama’s first campaign.
Matthew Barzun, new US ambassador to London Obama’s chief money-raiser, Matthew Barzun. Photograph: Alamy

State Department veterans are increasingly concerned about the size of […]