The Next President...

Why does the media feel the need to say "who could be America's first Black President" in relation in Obama in every news bulliten?Shouldn't they just be stating "who could be America's next President"?Whilst it may be historical in terms of race, skin colour etc, shouldn't that all really be irrelevant in this day and age?I am not trying to be overtly PC but you don't here John McCain being referred to as he "who could be the 44th White American President" do you?