Nancy Pelosi’s Possible Trip to Taiwan Unsettles China—and the White House

WASHINGTON—A possible trip to Taiwan by House Speaker Nancy Pelosi is jangling nerves in the Biden administration after China warned that the visit would trigger severe consequences. 

The administration hasn’t asked Mrs. Pelosi to forgo the trip, which hasn’t been officially announced, in deference to the separation of powers among different branches of government, according to officials. Chairman of the Joint Chiefs of Staff Army Gen. Mark Milleyand Adm. John Aquilino, the head of the Indo-Pacific command, briefed Mrs. Pelosi on Capitol Hill on Wednesday, with White House staff present, the officials said...