The Smooth-Talking Republican Who Would Rule by Fiat

Vivek Ramaswamy, the Republican wunderkind running for his party’s presidential nomination, would like potential supporters to know he believes in the rule of law and the Constitution’s separation of powers — though his applications of such principles can seem selective.

After intense study of the Constitution, Mr. Ramaswamy says he believes that the awesome powers of the presidency would allow him to abolish the Education Department “on Day 1,” part of an assault on the “administrative state” that his 2024 rival, Donald J. Trump, fell short on during Days 1...