WASHINGTON — Biden administration officials have tried to project a tough line on China in their first weeks in office, depicting the authoritarian government as an economic and security challenge to the United States that requires a far more strategic and calculated approach than that of the Trump administration.They have also tried to send a message: While the administration will be staffed by many familiar faces from the Obama administration, China policy will not revert to what it was a decade ago.These early efforts have not concealed the enormous challenge President Biden faces in trying to formulate a strategy …
