A United States judge on Friday blocked the plan of President Joe Biden's administration to lift Title 42, the regulation used to expel undocumented immigrants during the Covid-19 pandemic.

The Centers for Disease Control and Prevention (CDC) announced weeks ago the end of Title 42 for May 23, but Louisiana judge Robert Summerhays suspended preparations to rescind it and on Friday definitively annulled its lifting.

Title 42 is a rapid deportation measure for undocumented immigrants that the CDC imposed in 2020 during the term of Donald Trump to stop the spread of Covid-19, and that has remained in force under the Biden administration.