1. in a manner relating to or authorized by Congress; by or through the action of Congress
Usage: formal; chiefly U.S. political context

Examples

• The president cannot declare war without congressionally approved authorization.
• Congressionally mandated spending limits apply to all federal agencies.
• The bill was congressionally enacted last year.
• Congressionally directed research funding supports universities across the nation.
• The treaty required congressionally ratified approval before taking effect.