If we're only talking about the chemical weapons, then yeah. Cratering a few command and control centers is stupidly easily for us.
But it's not just the weapons that need to be considered. Russia has a fleet there already, Iran may jump in and close the Straight of Hormuz to send oil prices soaring and force us to fight two fronts, Russia/Iran/China may choose to engage US for engaging Syria, Israel's trigger happy ass will get over involved, extremist elements will begin causing a muck everywhere, the U.S. will end up in MORE debt to fund another escalating war despite sequestration with a bum congress who can't do shit, domestic discontent will rocket potentially causing spread acts of civil disobedience and a further burden on the economy/jobs market/consumer pockets because of taxes, inactive military units will have to be reactivated and that'll take time, and very VERY expensive weapons systems we just started manufacturing may go boom whilst fighting SU-27's, MiG-29's, and who knows what else they'll throw at us.
If it was just the chemical weapons, I'd agree with you. But there's just too much more to consider. This situation is far, far more complex. I WISH it was as simple as:
1) Pew missile command center
2) No one defends Syria
3) Go home, have pie
I'm not being sarcastic either. I REALLY wish it was that simple, pie and all. Sadly, politicians...no, humans make this bullshit complex.
EDIT: UNLESS all that money in Defense wasn't actually poorly spent and was secretly spent on very new, very advanced systems being kept as an Ace in the hole. Like...if the worst happens and a freaking Gundam of Orbital Frame pops up and blasts everything without taking a scratch....whelp...least it'll be quick LOL.
EDIT 2:
http://www.reuters.com/article/2013/09/05/us-russia-g-idUSBRE98315S20130905Psh G20? About the economy? Naaaw let's talk more about Syria and stare at each other awkwardly with passive aggressive statements while the freaking POPE SAYS IT'S A BAD IDEA. Oh, did I mention there's word of some Chinese naval vessels off Syria's coast to 'observe' the situation? So right now I think it's:
US: 5-7 Vessels (some rumored to be equiped with the experimental railgun system)
Russia: 10-12 Vessels
China: 3-4 Vessels