Syria is of no consequence to USA national security. It poses no threat. I would think that obvious.

Destroying the chemical weapon capacity of Assad was sanctioned by a UN resolution. The USA, France and the UK took on the responsibility of enforcing the chemical weapons agreement in Syria. It could have been any other country that came forward to enforce the chemical weapons ban in Syria, but, it was three allies prepared to do the work.

There is no reason for the USA to consider any movement into Syria. It has no national security consequences. There are much bigger problems at hand and it includes the return of humanitarian assistance to the people.

Now, if killing people is all the people of the USA are interested in, they need to take a look at the death rate of gun violence in their own streets.