As I am reviewing some of the threads in these forums I am responding albeit late to s few of the issues regarding clearing customs. Since this original post went up, there has been an intensive training program of US Customs officers regarding the ATA Carnet. The national guaranteeing association for carnets in the US undertook to do in-person training with officers around the country beginning in about 2009. Hopefully this training will help alleviate some of the issues with using carnets in and out of the US.