The members of the North American Free Trade Agreement (NAFTA) are preparing another round of negotiations, due for 23-27 September. The gathering is part of an accelerated timeframe planned by ministers. The proposals under discussion touch upon several points related to digital commerce, such as taxation of online purchases. NAFTA has been in place for over two decades, with the countries involved responsible for approximately one-quarter of the world's gross domestic product. An issue that remains unclear is how much of the Trans-Pacific Partnership's (TPP) terms will carry over into the NAFTA process. All three NAFTA parties were involved in the TPP negotiating process, until the US decides to leave the deal earlier this year.