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.

U.S. President-elect Donald Trump has picked Miami-Dade County Commissioner Kevin Marino Cabrera to serve as ambassador to Panama after having threatened for the U.S. to reassert control over the Panama Canal it handed over 25 years ago.