Originally Posted by
Jebby_ca
Canadians do not need to fill out an I94(white form) or an I94W(green form) unless you hold some kind of a visa (like an H1B, E1, etc.). Canadians entering the US only need to fill out the customs declaration card (blue form, with white text fields).
That is incorrect with respect to the post you were replying to. CLT does in fact have a port policy that an I94W must be filled in by Canadians unless they are in direct transit to Canada (eg next flight out). If you are staying overnight in the US, or even travelling to a border city, you are not exempt from filling out the I94W at CLT. Each port of entry appears to have the right to determine their own policies which would also explain the disparity between some airports allowing Canadians to use the US passport holder line and others not.