No offense intended at all Adept - and please don't take this in the wrong way - but the leader of a country has to be in some way biased against the leaders and peoples of other countries in order to put their interests ahead of other countries.
Or there would be no need for country leaders, or countries.
What has this got to do with anything? Are you saying that Trump's racist about Mexians, Muslims etc is ok, because "every leader has to be a little bit biased"? I honestly have no idea what you were trying to say here. How about making fun of the handicapped? Is he supposed to be put the interests of the non-handicapped before them? Is that just what leaders are like?