UPDATE 1 — White House says US ambassador to Greece Guilfoyle asked to resign
(Adds background, attempt to seek comment from Guilfoyle, paragraphs 3-6) By Jacob Bogage and Trevor Hunnicutt WASHINGTON, Oct 13 (Reuters) — The White House said on Tuesday that it had asked US Ambassador to Greece Kimberly Guilfoyle to resign. "We have asked Ambassador Guilfoyle to resign," said White House press sec