Shares of CoreCivic and GEO Group fell Wednesday after the Supreme Court kept pandemic-era border controls in place. The Title 42 regulation is a border policy introduced by former President Donald Trump’s administration at the beginning of the pandemic in March 2020. The initial purpose of the controls, according to the Trump administration, was to allow Border Patrol agents to more easily turn away people trying to come into the U.S. from Mexico in an attempt to slow down the spread of Covid-19.