0700 GMT August 24, 2019
The American Civil Liberties Union and others filed the request Wednesday, seeking a Thursday hearing in San Francisco. The groups sued Tuesday and want the judge to block the policy while the case is heard, AP reported.
The Donald Trump administration rules went into effect Tuesday and prevent most migrants from seeking protection as refugees if they have passed through another country first.
It targets tens of thousands of Central Americans who cross into the US through Mexico. But it also affects people from Africa, Asia, and South America who come to the southern border.
Immigrant advocates say the plan illegally circumvents the asylum process Congress established.
The UN refugee agency late Monday said it's "deeply concerned" about new US restrictions on asylum, saying it will put vulnerable families at risk.
The UN High Commissioner for Refugees (UNHCR) said the rule overly restricts the right to apply for asylum, and threatens the right not to be sent back to countries where people could face persecution.