Trump 2013 disagrees with you.
It seems Trump has learned more about this subject since becoming President...Mattis, etc, have advised him...
Trump 2013 disagrees with you.
He did not say Congress had to declare war. He said, in the precise case of Obama, that Obama had to get Congressional approval for a strike in Syria.
We can ask him if the exact same thing applies to him in this case.
But each case is different. Clearly he has the power to do this, and he made the decision that it was not necessary to ask Congress, at least this time.
You apparently lack historical memory
Just out of curiosity what would you like done about it? As far as I know the only way to punish the president for violating the constitution is to impeach. Is that what you want?
If not then please sit down before you hurt yourself