“Title 42” refers to an obscure provision of U.S. law that was originally enacted in 1944 to allow the government to quarantine people entering the country if necessary “to prevent the introduction, transmission, or spread of communicable diseases.” At the beginning of the COVID-19 pandemic, Trump administration officials required the Centers for Disease Control and Prevention (CDC) to issue an order using Title 42 as justification to allow the Department of Homeland Security to quickly expel asylum seekers who arrived at the U.S.-Mexico border, without giving them a chance to seek asylum.

Read the policy advisory: https://refugees.org/wp-content/uploads/2021/07/Title-42-What-It-Is-and-How-You-Can-Help-End-It.pdf