If you believe, as I believe, that this POTUS is different, a great roar of opinion to the White House email might make a difference.
I encourage my fellow Kossacks to find out.
There are two legal grounds to strike another sovereign nation, self-defense or a police action authorized by the UN Security Council. Syria is not violating the chemical weapons treaty because it is not a party and it it not violating the Geneva Protocol because it's not a war.
What Syria did is immoral, not illegal.
What Mr. Clinton did in Kosovo was illegal but not immoral. Perhaps we should support actions in that category because that is, in the long run, where jus cogens comes from.
However, you don't arrive at a jus cogens, an enforceable standard of customary international law, unilaterally.
This is possibly the most unwise action we have seen this POTUS entertain. There is no upside. The downsides are legal, moral, and political.
We owe it to him to try to save him from his own rhetoric.