Jack Goldsmith, who once ran the Justice Department office that advises presidents on what they can and can’t legally do, takes on some of the hardest questions about the limits of the president’s power — from changing the government to the use of military force abroad, including the invasion of Venezuela.

Drawing on his experience inside the executive branch, he looks at why the limits on presidential power are more fragile than they appear, how precedent quietly expands executive authority, and what that means for the future of the presidency.