Trump’s Iran war is grounds for impeachment, according to the Constitution

Prior to the American Revolution, the power over war and foreign affairs was lodged in the executive branch. European monarchs decided when to commit their countries to wars and military incursions. In countries such as Great Britain with representative assemblies, elected officials could withhold funds if they disapproved of a foreign adventure, but there their power ended.

The Founding Fathers rejected the European model. Our first charter of union, the Articles of Confederation, lodged all executive functions in Congress.