Isaac Arnsdorf is a senior White House reporter. His reporting from the scene of the Trump assassination attempt was central to The Post’s coverage that won the 2025 Pulitzer Prize for Breaking News. He joined The Post in 2022 to cover Republicans, the MAGA movement and the Trump campaign. He was previously an investigative reporter at ProPublica and a money-in-politics reporter at Politico. His first book, "Finish What We Started," about the MAGA movement after Jan. 6, 2021, anticipated Trump's return to power. His second book, "2024: How Trump Retook the White House and the Democrats Lost Am