In this Sunday, January 24, 2021 file photo, officers of the German Federal Police check passengers arriving by plane from Prague at the Frankfurt Airport in Frankfurt, Germany. The European Union's executive body proposed Monday Jan. 25, 2021, that the bloc's 27 nations impose more travel restrictions to counter the worrying spread of new coronavirus variants but make sure to keep goods and workers moving across EU borders. (Photo by Boris Roessler/dpa via AP Photo, File)
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