Washington (CNN) In renewing his order to bar people who cross the border illegally from seeking asylum, President Donald Trump issued a proclamation that criticized a federal judge that's kept his policy in check thus far -- an unusual step for such a formal order.

Trump's original November proclamation establishing the ban was blocked a federal judge in Northern California and upheld by the 9th US Circuit Court of Appeals. In order to ensure the ban would take effect should those courts be overturned, the White House had to renew the proclamation, which had expired, starting another 90-day clock.

"The ability of the United States to address those problems has also been hampered by a nationwide injunction issued by a United States District Judge in the Northern District of California," Thursday's proclamation reads, referring to migrant caravans journeying to the US-Mexico border.

It goes on: "Should the injunction be lifted, aliens who enter the United States unlawfully through the southern border in contravention of this proclamation will be ineligible to be granted asylum under that interim final rule."

Trump has frequently railed against the 9th Circuit as "very unfair." His criticisms draw on previous decisions by judges that have kept other administration immigration policies from moving forward, like the Obama-era Deferred Action for Childhood Arrivals program that Trump has sought to end.

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