David A. Fahrenthold, an investigative reporter, describes the struggles of the Sierra Club, one of the largest environmental groups in the U.S. The group has lost about 60 percent of its supporters since 2020.

President Trump has embarked on a six-day diplomatic tour of Asia, testing his role as a statesman and negotiator as he pursues a trade deal with China. Erica L. Green, the White House correspondent for The New York Times, explains what’s at stake.