Inasmuch as the United States hasn't formally declared War since 1941—that's over 75 years—it just seems like raising that particular technical issue isn't the most important aspect of these events.
Boy! Talk about getting wrapped up in semantics!
As I noted, there is ample legal and political precedent regarding the Constitutionality of a President's military authority in cases such as this.
You might want to get started drafting those articles of impeachment yourself, because I don't think even the Democrats will be getting worked up over this use of Presidential War powers...
Indeed!
Senate Democratic Whip Dick Durbin said he had been briefed on the strikes, and called them "a measured response to the Syrian nerve gas atrocity." ...Senate Minority Leader Chuck Schumer said, "Making sure Assad knows that when he commits such despicable atrocities he will pay a price is the right thing to do."
Trump's Syria strikes divide Congress - but not along partisan lines - Politico
Constitutionalists are supposed to be better than Democrats. You are espousing al a carte constitutionalism, a source of our problems.