In April 2013, McKidd was Grand Marshal of the 15th annual Tartan Day Parade in New York City. At the time, he voiced his support for Scottish independence and expressed regret that he would be unable to vote in the then upcoming Scottish independence referendum the following year because he no longer lives in Scotland. Of Scottish independence, McKidd stated, "A lot of people think we're all gonna fall flat on our face if we do this. We're too feisty a people to let things turn bad if we went and tried it. Why not? Why not try at least?"