I do not believe this will affect the intensity of the investigations on the Russian meddling with our elections.  Congress is not going to allow the possibility that putting this aside could result in  have information come out in the future that indicates what happened during election cycle was ignored by allowing another issue to stop the hearings.

The intensity of the missile attacks on-the-other-hand might not have destroyed the base. However it certainly had to get Assad's attention and illustrate the US has the capability to do far more than talk.  How Assad acts in the future is truly unknown as he exhibits the tendencies of a mad-man who might not care if his entire country is destroyed. 

Congress and not the president must set the course for future actions in Syria. For Congress is empowered in the Constitution to make the required decision.