Korea (UN Resolution with troops from England, Turkey, Australia, Phillipines and the US)

Viet Nam (August 4, 1964 Congressional Resolution after the Gulf of Tonkin incident)

Somalia (UN Resolution)

Panama (12/15/89 Panama declared war on the US and on 12/20/89 we entered the country)

That little Island in the Caribbean with the college kids. GRENADA (OECS Resolution)

As you can see we always had UN and/or Congressional approval to enter the above countries. To my knowledge no black ops have ever been approved or carried out against the acting leader of a soverign nation with or without UN and/or Congressional approval.

Yes, you missed a few (partial list):

Kosovo
Bosnia
Iraq
Kuwait
Honduras
Haiti
Cuba
Libya
Lebanon
Israel

Plus the other cat and mouse games never mentioned by the media...

We can't stand behind our constitution only to go against it if it serves our own purposes... that's why we have 3 branches in government, to act as a check-and-balance. That's also why there's a UN, NATO, was a Warsaw Pact, etc.