This is prophesing out of both sides of your mouth. Heads I win, tails you lose.
The fact is that the body of Christ has and continues to pray for righteousness and justice in America. We serve the God who was willing to spare Sodom and Gomorrah, if only 10 would repent. I assure you that there are more than 10 blood-bought, Spirit-filled Christians praying for America.
Any 'prophet' who hedges his bets is not a prophet.
Many I know to be part of the body in the USA are much more dialed in to the day-to-day news cycle meat than they are the spiritual realities underneath it all. Which ultimately raises the question in my mind of who exactly are the body of Christ in the USA. Anyone that attends church at all, ever? These folks I'm seeing seem much more amped up about the latest news than they are about praying for divine deliverance. But there are surely many millions of believer who are as you describe.
With regard to prophesying out of both sides of his mouth, you make a good point. If Trump doesn't win, this guy can say, "USA church didn't pray enough." That's between the Lord and him. He will take a very public beating about the head and shoulders vocationally if that is the case. As well he should. But he seems aware of the risk. He demeanor in the video is one that shows he's all in on this one, not worried about the risk.