While the U.S. deals with the new coronavirus, racial injustice and a presidential campaign, tensions with China continue to unfold. WSJ’s Gerald F. Seib explains. Photo: Wang Zhao/AFP President Trump damped expectations for a promised phase-two trade pact with China on Friday, saying the relationship between the countries has been too badly damaged by the coronavirus pandemic. “I don’t think about it now,” Mr. Trump told reporters aboard Air Force One, where he criticized China’s response to the new coronavirus, which continues to spread rapidly throughout the U.S. “They could have stopped the plague, they could have stopped it, they didn’t stop it.” …