Earlier quoted context omitted.
The Tariff Act of 1930 reflects the duality between the President’s executive power to conduct foreign policy and Congress’s legislative power to set taxes. Until the early 20th century, tariffs were the primary mechanism for raising federal revenue. So Congress viewed tariffs as a tax, within Congress’s purview. But the 1930 Tariff Act also recognizes that tariffs are also a tool of foreign policy, which is within t…
This idea that the president has unrestricted ability to set foreign policy is an invention of this particular administration. In truth, powers are split between the executive and legislative branches [1]. Most notably, only Congress can declare war, which has been a real sticking point in the last century and why, for example, the Korean War wasn't technically a war (it was a "police action") and why the Vietnam War…
Likewise, it also strips Executive power. Executive agencies can no longer fill in the obvious gaps in what Congress passed.