China's positioning at Davos

A.M. Edition for Jan. 22. Details of a potential Greenland deal include U.S. access to minerals and military bases. WSJ editor-in-chief Emma Tucker brings us the latest from Davos, after President Trump changes tack in his push for the island. Plus, U.S. immigration agents target Maine, setting up another showdown with local officials. And, SouthWest scores an upgrade in our annual airline rankings. Luke Vargas hosts.

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