A key approval has paved the way for Aeromexico and Delta to go forward with their proposed joint venture, but the process is not yet complete. According to an Aeromexico investor update earlier this week, the Mexican Senate has finally delivered a long-awaited vote in favor of approving a more open bilateral aviation agreement between the US and Mexico. This updated agreement is a prerequisite for regulatory approval of the Delta-Aeromexico venture, and also an opportunity for all airlines to offer expanded service between the countries. The long-awaited aviation agreement, the signing of which a US DOT official confirmed on Dec. 5, 2015, would eliminate numerical limits on the number of airlines that can serve transborder city pairs. <br/>