We flew up to Buffalo and then took a tour across the border, no problem getting in to Canada but the customs officers on the US side coming back held us up because the officers at Orlando had stapled all of our green visa waiver forms into one passport, he was adamant that they should be stapled in each individuals passport and even phoned Orlando to discipline them, eventually, he let us through, I think he was one of those that you hear so much about when people talk about US immigration officials.