The 9th U.S. Circuit Court of Appeals has temporarily blocked a federal judge’s order that directed President Donald Trump to return control of National Guard troops to California after he deployed them there following protests in Los Angeles over immigration raids.

The state of California had sought to stop the president from sending National Guard troops without the governor’s approval.

Senior U.S. District Court Judge Charles R. Breyer said he was “trying to figure out where the lines are drawn.”