Han wrote:

Why as there any need for declarations of war, the Tonkin resolution,
the Iraq equivalent of that resolution?

I thought that Congress had the power to declare war, or the modern
equivalent of that declaration.

Congress has the sole power to declare war. The president has the sole power
to wage war. The Congress can declare all it wants, but the president could
refuse to do anything about it. The president can wage war all HE wants and
the Congress can do little to prevent his actions (aside from cutting off
funds).

Remember, Bill Clinton waged war on more countries than any president since
FDR (Somalia, Haiti, Sudan, Iraq, Afghanistan, Bosnia, Albania, and Serbia).