The Christian idea of the exercise of power is that those who are in leadership will serve, will suffer. Jesus did not come to be served, but to serve, to be the lowliest and the meekest of all of us. I suspect that Trump does not restrict himself from getting any luxury he really wants. I suspect he is very, very demanding in how he carries out his daily life. Trump at least appears to exert power in the way that Jesus says the Gentiles, in contrast to himself, exert power. A president who was truly trying to follow Jesus' example would not do that. He would be someone who would take suffering onto himself, instead of allowing suffering to be imposed on others while he enjoyed the highest comforts.