Should a person pray for the United States ? Would Jesus pray for it or teach his disciples to pray for the United States ? No. Why ? Because the United States, along with Britain, is the 7th and last world power of secular and Bible history, as noted at Revelation 17:9, 10, that is in opposition to God and is to be destroyed.
It is the leading member of the political "wild beast" at Revelation 13, or the entire political system, that was created by God's archenemy Satan from the restless, agitated "sea" of mankind, see Isa 17:12; 57:20, 21, who wants to form their OWN government apart from God, though seriously divided.
Britain/America is the "wild beast ascending out of the earth (or more stable elements of mankind, so that it does not collapse, at Dan 2:33, being noted as having a framework of "iron mixed clay", or "a strong backbone mixed with the unstable clay of people" (see all the protests by "the people"), Dan 2:43, making for a government that "sways", but will not "fall down")
The United States is the key member of the 7th and last world power of Bible history (with Britain more on the side), taking center stage on the world scene, both politically and economically. And what does Daniel 2:44, 45 state of what is to happen to the ENTIRE political system, with the United States at "the top" ?
This: "In the days of those kings (of "the feet and toes of iron mixed with clay", Dan 2:33, the Anglo/American world power, that came into existence near the end of World War I) the God of heaven will set up a kingdom (in 1914, see Dan 7:13, 14; Rev 6:1-8) that will never be destroyed. And this kingdom (or God's heavenly Kingdom) will not be passed on to any other people."
"It will CRUSH and put an END to all these kingdoms (the ENTIRE political system with its "king", the United States), and it alone will stand forever, just as you saw that out of the mountain (God's sovereignty) a stone (God's Kingdom) was cut not by hands (or NOT through divisive politics),"
"and that it crushed the iron, the copper, the clay, the silver, and the gold. The Grand God (whose name is Jehovah, see Ex 6:3, KJV) has made known to the king what will happen in the future. The dream is TRUE, and its interpretation is trustworthy.”