According to The Wall Street Journal, Guilfoyle allegedly told Greek Energy Minister Stavros Papastavrou at a March dinner in Athens that the United States had influenced Romania's government collapse, then stated: "We can do that to any country we want. We can do that here." Papastavrou reportedly challenged the remark, reminding her that the U.S. could not replace Greece's democratically elected government.
Greek government spokesperson Pavlos Marinakis said the issue "was never raised" and would not be tolerated, emphasizing that U.S.-Greece relations are based on mutual respect and shared values. Guilfoyle's lawyers denied wrongdoing. The reported exchange drew attention from Greek opposition parties and raised questions about diplomatic conduct.
The Wall Street Journal report also examined Guilfoyle's promotion of American liquefied natural gas across Southeastern Europe. Businessman Christos Marafatsos reportedly accompanied her during official meetings while representing Greek construction company Aktor, which paid him $160,000 for lobbying work—raising questions about private interests in diplomatic settings. Lawyers for Guilfoyle, Marafatsos, and Aktor denied any wrongdoing.
Guilfoyle's role as U.S. Ambassador to Greece under Trump has included promoting stronger American energy ties across the region. The alleged comments remain disputed, with her representative challenging the description of the exchange.