He Preached in the United States and Was Elected President by the People

(System text + no harem + slap in the face) Traveling to a parallel world, traveling thousands of miles to the United States to preach, what's wrong with coming all the way to preach and raise a zombie? What's wrong with me knowing how to use hundreds of millions of thunder spells? It's not difficult at all to see evil spirits and vampires who are all scum, but even a big demon has to bend down and nod to say good morning, what? Is it not easy for me to be the president of the United States?