I only referred to the "United States" as an opposite to the "Confederate States". Two entirely seperate and independenct nations. It was the United States that did invade the Confederate States of America with an army that claimed to be doing so, so as to force those Confederates States to rejoin their Union. There is no doubt that The Army of the "United States" in 1861 was an invasion army intent on the oppression of the freewill of the Confederate States.