Our country should never go to war over religion.
That being said the President swears an oath. "I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States." That's it... There's nothing in there about fighting them over there so we don't have to fight them over here.
Show me in how intervening in a local civil war in Iraq or Syria can be justified as protecting the Constitution, and I will be all for it. You can't do it, so don't even try.
The 2001 Authorization for use of Military Force is overly broad, and should have been repealed back at the end of 2001 when saner heads prevailed. Before we lost 4,487 American soldiers and another 32,223 wounded in Iraq. That's not even looking at the estimates of Iraqi Casultiies which run by various estimates between 150,000 and 1 million. That's not counting the 1,825 Americans dead and 19,889 wounded in Afghanistan. Something like $5,000,000,000,000 has already been spent and that's not considering the long term costs. No matter how you look at it, the price wasn't worth it!
This war is about two things; oil, and putting more tax payers money in the hands of the Military industrial complex that President Eisenhower warned us about in the 1950's. We ignore genocide in Darfur; but Iraq, Syria, and Iran all of which have significant oil reserves are right at the top of our foreign adventure agenda.
We need to step back and stay out of internal conflicts in other countries. We need to stop fighting wars in other countries and take the money currently being spent on these foreign adventures, and an overly bloated military, and invest it here in our own country. We need to declare a war right here at home to rebuild our stagnant economy and our crumbling national infrastructure. Once we get our country rebuilt, then we can help other countries do so as well; making friends instead of people who hate our country, and all that it stands for.