President Donald Trump’s open admission yesterday that he’s sabotaging the Postal Service to improve his election prospects crystallizes a much larger dynamic: He’s waging an unprecedented campaign to weaponize virtually every component of the federal government to partisan advantage.

Trump is systematically enlisting agencies, including the Postal Service, Census Bureau, Department of Justice, and Department of Homeland Security, that traditionally have been considered at least somewhat insulated from political machinations to reward his allies and punish those he considers his enemies. He is razing barriers between his personal and political interests and the core operations of the federal government to an extent that no president has previously attempted, a wide range of public-administration experts have told me