The Bible declares that all kings and rulers are subject to God's wisdom. We read in Proverbs 8:13-16 (KJV) 13 The fear of the LORD is to hate evil: pride, and arrogancy, and the evil way, and the froward mouth, do I hate. 14 Counsel is mine, and sound wisdom: I am understanding; I have strength. 15 By me kings reign, and princes decree justice. 16 By me princes rule, and nobles, even all the judges of the earth." Yet we also understand that God uses his people in directing earthly affairs. He raises up prophets, preachers, leaders, and servants who are endued with power and wisdom to speak truth to power, and God's children are given opportunities and open doors to do God's work in the earth. It is the nature of God to use His people in his course of action when it comes to the affairs of nations. At times it included raising up armies, but in other times, it was a matter of selecting rulers. Even though God preordained Saul, David, and others, the direction of the nation depended on the people. When Israel was righteous, it was blessed -- when it sinned, it was judged and then punished. Leaders often gave interventions that could be seen as intercession with God for its people - but only Godly leaders can ever make such intercession. Wicked leaders will always cause God's judgement to fall on the nation.
What God wants is for his people to find the mind of God that will result in the will of God. God already knows who the next president of the United States will be and what is the course of our nation, whether it is mercy or judgement. We know that Bible prophecy states that all the nations of the earth will be gathered "against Jerusalem to battle" (Zechariah 14:1), but the word "all" is often used metaphorically as a generalization. In the end, will Israel have the United States as an ally against those who want to destroy it? While presidential candidates in both the Democratic party and the Republican party contend they are friends to Israel, God's judgement on America will not be about words but about actions and behaviors. More specifically, what God will do with America will depend on whether there is a leader who will yield to God's laws of righteousness or continue the wicked and immoral policies that have taken over our courts, laws, and society. There is an appalling number of Christians who now yield their votes to those who would support gay marriage, abortion, and a wealth distribution system that enslaves the poor as state dependents. Any Christian who is so blind to vote their pocket book instead of their morals is showing their true heart because they are not being guided by God's spirit. Sadly, many Christians do not consider that their "faith" should align with God's Word, not social agendas that are contrary to Bible truths.