Take the time to read and see the answer.
Presidential powers: Set by law, not used in this instance.
Congress responsibility: Engaged since they voted FOR the 'intervention'
ONLY Congress can declare war by law, not the president.
President is allowed 60 days 'military intervention' to respond quickly to an external threat.
Is Syria action considered a threat to the US? No.
Is Syria breaking international law? Yes.
Is the US forced to intervene in any way? No.
Is this a real choice? No.
Is a UN mandate needed? Debatable.
Can and should a population support a war? No.
Should a population be 'asked'? No.
Should the US be the world 'police? No.
Should taxes be raised to pay for a war? We are still paying for WWII and of course Korea, Vietnam, to name a few. Taxes pay for that over a loooong period of time (Example: 95 years for the UK - WWI).
What is a war? A war is an armed conflict between two countries. It involves a bit more than dropping bombs on one another. It 'formally' starts and ends. The start is a declaration of war between countries. The END is debatable: surrender, military defeat or annihilation, victory. A 'properly' ended war is achieved through a peace process and declaration that may or may not include reparation, loss of territory, limitation on armed forces, change of government... A war involves armies, not civilians, in theory. When it involves civilian it is qualified 'total war' as in WWII where the civilians population and agglomerations where nearly bombed out of existence.
An armistice is not the end of a war but a temporary lull. WWI ended in an armistice (Versailles) not a peace treaty. The later was signed 21 October 1919.
'Formal' wars start with an 'old' technology and ends with the latest weaponry. WWI started with walking or mounted armies and ended with tanks (broke the stalemate and over powered machine guns). Gassing troops started with Germany and was used by both sides in the end. It was 'declared' illegal by the LON (League of nations), based in Geneva after the war. WWII started with a combination or air power and tanks and ended with the atomic bomb. The UN which replaced the LON and based in NY never declared the atom bomb as 'illegal'. A voluntary treaty of non proliferation was created instead. Not all countries are part of it.
Examples:
- WWII started with formal declarations of war. Japan's was a day late, after Pearl Harbor and the country was branded treacherous. It ended with formal war surrender. The USSR (Russia) and Japan NEVER formally ended it.
- Korean war, also considered the first UN 'Police' action. This war was really a revolution, like Vietnam. The difference is that China got involved and changed the 'police action' into a full scale war. This war is smoldering and has never been ended. We are still in Korea and of course still paying for the troops there so in effect it is the longest war for the US. Do not even mention 'cost' here.
Other wars:
'Cold war', term invented to describe the state of conflict between the East and the West. NATO and the Warsaw alliances defined who was on which side.
'Economical war', used to describe the financial tit for tat between countries. Was used against Japan during it's rise (1970's). Is currently alive and doing well between China and basically the rest of the world.
'Proxy wars' defined as a war between two countries, each side supported by other countries that otherwise would be in open warfare. The US and the USSR are notorious for doing that.
End result: a 'war' is not necessarily an open armed conflict but it is the generally accepted definition.
An armed conflict is a limited armed engagement with limited goals that do not involve the population (other than being by-standing victims).
A military intervention last at most a couple of days and has strict limits (Example: Student rescue in Grenada). Incredibly this takes place more often than we imagine and know. The first one for the US took place in Algeria to free US citizens from pirates. (Search for Barbary Pirates wars)
These two are under the 'Presidential power'.
Post is WAY too long but I do not see a simple answer.