You are skeptical that someone who has what appears to be otherwise great grammar and spelling is not from the US... because of one mistake? That everyone and t

You are skeptical that someone who has what appears to be otherwise great grammar and spelling is not from the US... because of one mistake? That everyone and their grandmothers has made at least once in their lives? Have you seen the 45th president? Have you seen the average American? Are you actually serious right now?