WASHINGTON (AP) — Mr. President, she told him, "Undo it."

With those two words, House Speaker Nancy Pelosi offered Donald Trump one last chance to avoid becoming only the fourth president in office to face impeachment proceedings .

By then, it was too late.

The night before, she already had started handwriting a draft of the speech she would deliver to the nation.

This account of the turn of events of recent days is based on interviews with lawmakers and aides. Some spoke on condition of anonymity because they were unauthorized to detail private conversations and events.

Pelosi's decision to l...