Why Pelosi and her party finally embraced impeachment

Speaker Nancy Pelosi dialed her long-time deputy, House Majority Leader Steny Hoyer, on Monday afternoon to let him know she’d come to a momentous decision: she was going to endorse an impeachment inquiry into President Donald Trump.

Pelosi was in New York City for a private dinner with members of the Acela Corridor elite — Fortune 500 executives, politicians and high-profile journalists — to kick off the annual United Nations General Assembly meeting. Hoyer was sitting in a rental car in South Carolina, after attending the funeral of Emily Clyburn,...