White House told Guilfoyle, who is alleged to have sought a bill payment from a Trump donor, to resign from post

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Kimberly Guilfoyle is stepping down as US ambassador to Greece after weeks of reports that she sought payment from a Trump donor in exchange for access to administration officials.

The decision, announced by the White House on Tuesday morning, ends the diplomatic career of one of Donald Trump’s longest-standing political allies. It came after the US president and Marco Rubio, the secretary of state, were reported to have grown furious over the allegations.