Now when Joshua was near Jericho, he looked up and saw a man standing in front of him with a drawn sword in his hand. Joshua went up to him and asked, “Are you for us or for our enemies?”“Neither,” he replied, “but as commander of the army of the Lord I have now come.” Then Joshua fell facedown to the ground in reverence, and asked him, “What message does my Lord have for his servant?” (Joshua 5:13-14 NIV)
I think if anyone asked Jesus, “Are you for President Trump or against President Trump?”
I don’t think Jesus would say, “Against! I don’t like his actions. I wouldn’t do things that way,” nor do I think Jesus would say, “I’m for him! America first!”
I think Jesus would simply say, “Why are you asking me? What is required of the president of the United States according to the laws the Americans have made for themselves?”
Pursuit of Percipience 
I like these very simple thoughts. I thought Jesus would just say he is for all of us equally. He is only for Trump if trump has a personal relationship with God though Jesus. I have no clue on that.
Thank you. I think you’re right.