From the Introduction: "In April 2018, Customs and Border Protection (CBP) issued guidance to its officers, which noted that they could be stationed at the United States' international boundary with Mexico and inform arriving asylum seekers that U.S. ports of entry were full. Arriving asylum seekers were not allowed to cross into the United States and were instead forced to wait in Mexico. Simultaneously, CBP officials accepted limited numbers of asylum seekers a day--in a process that is known as metering--often communicating directly with Mexican officials regarding these numbers. As lines of asylum seekers grew longer in border cities, Mexican authorities and civil society groups responded by providing humanitarian assistance and creating informal waitlists. In December 2018, the Robert Strauss Center at the University of Texas at Austin, the Center for U.S.-Mexican Studies (USMEX) at the University of California San Diego, and the Migration Policy Centre published a report [hyperlink] documenting these practices. This report highlighted how metering had spread across the U.S.-Mexico border and described the waitlist systems in eight border cities. It found that, in December 2018, 6,000 asylum seekers were waiting along the border in Mexico and that the waitlist process varied in each Mexican border city. Since the report's publication, there have been changes in every border community. [...] This February 2020 metering update estimates that there are currently around 15,000 asylum seekers on waitlists in 11 Mexican border cities."
University of Texas at Austin; University of California, San Diego
Strauss Center: https://www.strausscenter.org/