"I’ll be honest, I don’t understand language like that. We don’t have so-called judges. We don’t have so-called senators. We don’t have so-called presidents," Sasse told George Stephanopoulos on ABC's "This Week."
"We have people from three different branches of government who take an oath to uphold and defend the Constitution, and it's important that we do better civics education for our kids," Sasse added. "So we don't have any so-called judges. We have real judges."
On Friday, U.S. District Judge James Robart blocked Trump's executive order nationwide.
Trump subsequently called Robart a "so-called judge" and lambasted the decision as "ridiculous."
A federal appeals court denied on Sunday the Justice Department's request for an immediate stay of Robart's order and the immediate reinstatement of Trump's immigration order.
Watch Sasse's response below via ABC News:
— ABC News (@ABC) February 5, 2017