The Trump administration has a new European target in its crosshairs: China’s state ownership of Piraeus port in Greece.

“It is unfortunate, but I think there’s ways around it, that something could be worked out, whether you pursue a path of enhancing output in other areas or perhaps that Piraeus could be for sale,” the U.S. ambassador to Greece, Kimberly Guilfoyle, said in an interview with local outlet Antenna TV.

China invested heavily in debt-ridden Greece during the country’s lengthy economic crisis, with the goal of making it a hub for Chinese exports. Athens actively courted Beijing as companies from other Western countries turned away from Greece, spooked by its financial woes and infamous bureaucracy.