Isaiah 34:1-3 "Come up close, YOU nations, to hear; and YOU national groups, pay attention. Let the earth and that which fills it listen, the productive land and all its produce. For Jehovah has indignation against all the nations, and rage against all their army. He must devote them to destruction; he must give them to the slaughter. And their slain ones will be thrown out; and as for their carcasses, their stink will ascend; and the mountains must melt because of their blood".
Daniel 2:44 And in the days of those kings the God of heaven will set up a kingdom that will never be brought to ruin. And the kingdom itself will not be passed on to any other people. It will crush and put an end to all these kingdoms, and it itself will stand to times indefinite"
This includes the USA.
All human governments are corrupt and according to scripture are under Satans control and authority.
1 John 5:19 "but the whole world is lying in the [power of the] wicked one"
That is why Satan could offer all the kingdoms of the earth and their authority to Jesus, because they are his to give.
Matthew 4:8-10 "Again the Devil took him along to an unusually high mountain, and showed him all the kingdoms of the world and their glory, and he said to him: All these things I will give you if you fall down and do an act of worship to me. Then Jesus said to him: Go away, Satan! For it is written, It is Jehovah your God you must worship, and it is to him alone you must render sacred service.
Notice, Jesus did not deny Satans authority over the kingdoms of the earth but told him to "go away". He refused to accept Satans offer. He even refered to Satan as "The ruler of this world" John 12:31 "Now there is a judging of this world; now the ruler of this world will be cast out".
So will/does God bless America? No, along with all other human rulership he will destroy it and replace them all with the righteous rulership of his own Kingdom, one world government under the authority of his Son Jesus Christ.
Psalm 2:8-9 "Ask of me (Jehovah), that I may give nations as your (Jesus) inheritance and the ends of the earth as your own possession. You will break them (Human Governments) with an iron scepter, as though a potters vessel you will dash them to pieces.