Give an example of a current foreign policy issue. how is the united states involved?

The US has to have policy to declare war. Right now Trump took an aggressive step to send a message to Syria with the world ears especially Russia and Iran to draw a RED LINE on what will provoke the US to use any and all means to prevent chemical use.

Congress votes to declare war but the President as commander and chief can act on his own wearing that hat. It it is not a. Act of war unless Congress votes it so,

So important yet blurred with drone strikes. Limited "messaging" air strikes. It tends to be more semantics.

You can do