Notably, Los Angeles Mayor Karen Bass slammed the high court, calling their decision "un-American" and "dangerous."
The late-summer lull in immigration raids has now been potentially blown up by the U.S. Supreme Court.
The high court's stay allows federal immigration officers to indiscriminately stop people in Los Angeles. The controversial decision has sparked anger and sharp criticism.
Supreme Court lifts restrictions on LA immigration stops
"With the stroke of a pen, the Supreme Court has undermined the rights of millions," Bass said, standing outside of a Home Depot store where, earlier this year, masked agents swooped in and grabbed people who the mayor says were targeted simply because they appeared to be Hispanic.
She reiterated the city's resistance to the federal immigration sweeps.
"I have already directed all city departments to bolster protocols and training in compliance with the city's law prohibiting the use of resources in immigration enforcement," Bass said.
The Supreme Court's order also garnered criticism from other California leaders.
"I think the rationale articulated by Justice Kavanaugh is dangerous and wrong," said California Attorney General Rob Bonta.
His office had filed an Amicus brief that supported the lawsuit challenging the immigration stops.
Bonta questioned the Supreme Court's decision that race cannot be used as a factor in college admissions, but race can be used to stop people and demand to see proof of citizenship.
"How they prevent the use of race to tackle discrimination but allow the use of race to potentially discriminate is disturbing, and it is troubling," Bonta said.
Meanwhile, the Trump administration is calling the Supreme Court stay a "major victory."
"DHS law enforcement will not be slowed down and will continue to arrest and remove the murderers, rapists, gang members and other criminal illegal aliens that Karen Bass continues to give safe harbor," DHS Asst. Secretary Tricia McLaughlin wrote in a statement.
The question now is: Will immigration raids in L.A. pick back up? The mayor is already warning that more working families can expect to be torn apart.