President Biden is expected to sign an executive order that would temporarily shut down the U.S.-Mexico border and suspend protections for migrants seeking asylum. Under the new measure, U.S. officials would cap asylum requests at the southern border at no more than 2,500 per day. The border would be closed if asylum claims surpass that figure. The executive order is likely to face legal challenges and has been described as the most restrictive border policy issued by any recent Democratic president. Mexico’s cooperation is key in enforcing the order, as migrants barred from the U.S. would be forced to wait across the border.