Lumster...God removed the King of Israel many long centuries ago.We wait for Jesus to return and rightfully take his throne.Until then all leaders are stewards.We just happen to elect ours....
God still selects the leaders of nations
Dan 4:27
....that the living may know that the most High ruleth in the kingdom of men, and giveth it to whomsoever he will, and setteth up over it the basest (lowest) of men.
Tha fact remains that all powers are ordained by God. When our founders took up arms aginst the established power they were rebelling against God himself. God allowed this but it doesn't mean He places His stamp of approval upon the methods used.
Many nations such as Canada and Australia were once part of the British empire and gained their freedom without a violent rebellion.
Nevertheless, God has used this nation for His glory but only because there has always been a remnant of the righteous in it. Not because we were founded on Christianity.
Isaiah 40:17
All nations before him are as nothing; and they are counted to him less than nothing, and vanity