Seven new subspecies of the white-winged dove (Zenaida asiatica) are described. The patterns of these recoveries are an invaluable aid to understanding racial distribution of this species. The extent of migration that breed in Central America is not yet adequately known. The range of the doves extends as far north as the southwestern United States.

The Security and Prosperity Partnership of North America (SPP) is a trilateral initiative that was launched in March 2005 for the purpose of increasing and enhancing security and prosperity in the United States, Canada, and Mexico. This initiative promoted communication and cooperation across several key policy areas of mutual interest, such as improving certain sectors of the economy, developing higher health and safety standards, and addressing environmental concerns. This report describes this initiative in brief detail, including summaries of several SPP-related meetings between the three countries' leaders.

This report begins with a brief discussion of security challenges in Mexico and Mexico's security strategy. It then provides updated information on congressional funding and oversight of the Mérida Initiative before delving into its four pillars. The report concludes by raising policy issues that Congress may wish to consider as it continues to fund and oversee the Mérida Initiative and broader U.S.-Mexican security cooperation.

This report discusses the fate of the North American Free Trade Agreement (NAFTA) after the Trump Administration sent a 90-day notification to Congress of its intent to begin talks with Canada and Mexico to renegotiate NAFTA.