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.

At first, he joked about Canada being an additional US state. Since, he has threatened to take back control of the Panama Canal. He also reiterated a desire from his first term to own the autonomous Danish territory of Greenland, which is not for sale.

President-elect Trump floated the idea of the U.S. sending troops to the Panama Canal, buying Greenland, and strong-arming Canada into becoming the country’s 51st state. NBC News Senior National Political Reporter Jonathan Allen and former Rep.