In the wake of US attacks against Houthi militants in Yemen, a scholar of presidential power to use the military examines the history and present of the laws around US military action.
President Joe Biden is deploying 3,000 troops to support NATO in Eastern Europe. By doing so, Biden enters both a regional conflict and tangled legal territory.
A new proposal also puts pressure on presidents to evaluate their foreign policy objectives more clearly to determine whether military action is, in fact, appropriate.
Both President Trump and President Obama used military force without informing Congress, or getting its approval. But the differences reveal more than the similarities.