Donald Trump has said that the U.S. could demand the return of the Panama Canal if the country fails to reduce the fees it charges American ships.

“The Panama Canal is considered a VITAL National Asset for the United States, due to its critical role to America’s Economy and National Security,” Trump wrote. “A secure Panama Canal is crucial for U.S. Commerce, and rapid deployment of the Navy, from the Atlantic to the Pacific, and drastically cuts shipping times to U.S. ports.”

Trump again having designs on Greenland comes after the president-elect suggested over the weekend that the U.S. could retake control of the Panama Canal if something isn't done to ease rising shipping costs required for using the waterway linking the Atlantic and Pacific oceans.