In 1993. the NAFTA supporters promised the agreement would help boost American exports. United States exports to Mexico have risen. But what NAFTA supporters will not tell us is that most of these are what we call revolving door exports. They come in. they come right back out. United States components sent to the maquiladora factories along the United StatesMexican border for a quick assembly by low wage workers. with no protections and no environmental protections. and immediately shipped back to the United States. They are not even there long enough to have a visa. if they were required to have one. They are just shipped. assembled and right back here. Dr.