The Supreme Court is hearing oral arguments over the Biden administration’s attempt to end the “Remain in Mexico” policy, also known as Migrant Protection Protocols (MPP). The policy began in 2019 under the Trump administration and forced migrants to stay in Mexico while awaiting decisions for their immigration cases. Lower courts previously ruled that the Biden administration did not follow the rules when it tried to end the policy over humanitarian concerns. The Justice Department warned that if the Supreme Court rules the administration cannot end the policy, then legal precedent may be set that could limit the power the executive branch has on immigration and foreign relations.