“The authors of the Constitution intended Congress to be first among the federal government’s three co-equal branches. Endowed with the power to legislate, tax, spend, and oversee the weaker Executive and Judicial branches — while simultaneously held to tighter public accountability — Congress was meant to be the driving force in federal policymaking.”
The above is taken from Sen. Mike Lee’s official website, from a page where he promotes the idea that Congress has foolishly given away, or carelessly let slip, its explicitly given charge to be first among equals in the federal government.