Playbook: “No matter what you think about this policy, it’s going to make life harder for Trump. First, it’s Trump’s biggest political blow since taking office. There are already a spate of legal challenges that will grab headlines for weeks. It’s splitting his party — only a handful of Republicans have spoken out against him but privately, a large number of GOP lawmakers are grumbling. If congressional Republicans were for this policy, they could pass legislation to codify it into law. They haven’t and probably won’t. They had no heads up from their president this was coming, and now they’re under pressure to defend this.”

Politico: “Now, what was meant as a bold assertion of presidential prerogative and a down payment on his promise to ‘eradicate radical Islamic terrorism from the face of the Earth’ has dealt President Trump his first political defeat, and energized his opponents after a week of demoralizing developments.”

“This whole idea that they’re being separated and ripped from their families, it’s temporary.”

— Kellyanne Conway, quoted by Politico, adding that the immigration ban President Trump ordered is a “small price to pay” for greater security.

“To build his highly touted deportation force, President Trump is reviving a long-standing program that deputizes local officers to enforce federal immigration law,” the AP reports.

“The program received scant attention during a week in which Trump announced plans to build a border wall, hire thousands more federal agents and impose restrictions on refugees from Middle Eastern countries. But the program could end up having a significant impact on immigration enforcement around the country, despite falling out of favor in recent years amid complaints that it promotes racial profiling.”

White House chief of staff Reince Priebus “appeared to reverse a key part of President Trump’s immigration order on Sunday, saying that people from the affected countries who hold green cards will not be prevented from returning to the United States,” the New York Times reports.

But Priebus “also said that border agents had ‘discretionary authority’ to detain and question suspicious travelers from certain countries. That statement seemed to add to the uncertainty over how the executive order will be interpreted and enforced in the days ahead.”

“A federal judge in New York blocked deportations nationwide late Saturday of those detained on entry to the United States after an executive order from President Trump targeted citizens from seven predominantly Muslim countries,” the Washington Post reports.

“Minutes after the judge’s ruling in New York, another came in Alexandria when U.S. District Judge Leonie Brinkema issued a temporary restraining order to block for seven days the removal of any green-card holders being detained at Dulles International Airport.”

“Several hours after the judicial rulings, the Department of Homeland Security said it would continue to implement Trump’s executive order.”

“I stand with the people gathered across the country tonight defending our values and our Constitution. This is not who we are.”

— Hillary Clinton, on Twitter last night backing those protesting President Trump’s travel ban.

CNN: “Administration officials weren’t immediately sure which countries’ citizens would be barred from entering the United States. The Department of Homeland Security was left making a legal analysis on the order after Trump signed it. A Border Patrol agent, confronted with arriving refugees, referred questions only to the President himself, according to court filings.”

“Saturday night, a federal judge granted an emergency stay for citizens of the affected countries who had already arrived in the US and those who are in transit and hold valid visas, ruling they can legally enter the US.”

“Trump’s unilateral moves, which have drawn the ire of human rights groups and prompted protests at US airports, reflect the President’s desire to quickly make good on his campaign promises. But they also encapsulate the pitfalls of an administration largely operated by officials with scant federal experience.”

Lawfare: “The malevolence of President Trump’s Executive Order on visas and refugees is mitigated chiefly—and perhaps only—by the astonishing incompetence of its drafting and construction.”

A California attorney filed a federal lawsuit Saturday broadly challenging President Trump’s new executive order limiting immigration from Muslim-majority countries in order to combat terrorism, Politico reports.

“The suit, filed Saturday afternoon in U.S. District Court for Northern California, argues that the order intrudes on Congress’ legislative authority and violates the Establishment Clause of the Constitution by discriminating on the basis of religion.”

Washington Post: Trump order causes chaos and outrage

People holding so-called green cards, making them legal permanent U.S. residents, are included in President Trump’s executive action temporarily barring people from seven Muslim-majority countries from entering the United States, Reuters reports.

ProPublica: “It’s also expected to have substantial effects on hundreds of thousands of people from these countries who already live in the U.S. under green cards or on temporary student or employee visas.”