The power of a single judge to issue a nationwide injunction has become pivotal in the question of whether Trump can quickly implement his aggressive agenda. Several cases either already awaiting action by the Supreme Court or heading toward nine justices involve such a judicial order.

The Supreme Court on Friday afternoon put on hold an order by a federal judge in Massachusetts that would have required the Department of Education to reinstate more than $65 million in grants that it terminated in February because they funded programs that included diversity,

The Supreme Court issued an order Friday allowing the Trump administration to move forward with cancellation of federal funding for teacher training initiatives.