The Trump administration has backflipped on the application of its comprehensive immigration order issued last week.
The Department of Homeland Security has issued a deeming all permanent residents will be exempted from the order under national interest provisions.
"In applying the provisions of the president's executive order, I hereby deem the entry of lawful permanent residents to be in the national interest," the department said in a two-sentence statement.
"Accordingly, absent the receipt of significant derogatory information indicating a serious threat to public safety and welfare, lawful permanent resident status will be a dispositive factor in our case-by-case determinations."
The administration had earlier said people holding green cards, making them legal permanent US residents, were included in President Donald Trump's executive action temporarily barring people from Iraq, Syria, Iran, Libya, Somalia, Sudan and Yemen from entering the United States.
Earlier on Monday, President Donald Trump insisted that his executive order was "not a Muslim ban," after it was met with global outrage and huge protests across the United States.
Trump said in an unusual official written statement: "America is a proud nation of immigrants and we will continue to show compassion to those fleeing oppression, but we will do so while protecting our own citizens and border. America has always been the land of the free and home of the brave."
"To be clear, this is not a Muslim ban, as the media is falsely reporting. This is not about religion -- this is about terror and keeping our country safe," he said, adding that more 40 Muslim countries were not affected by his order.
Trump signed the temporary ban as an executive order on Friday afternoon, suspending the arrival of all refugees for at least 120 days and barring visa holders from the seven nations.
Also affected were foreign dual nationals from European Union countries and at least initially green card holders already on the path to US citizenship. Canadian and US dual passport holders were allowed through.
The United States was hit Sunday by a second day of protests denouncing Donald Trump's ban on travelers from seven Muslim countries as the president stood unrepentant in the face of judicial stays and global outrage.
Protesters gathered outside the White House and in New York's Battery Park, across the harbor from the Statue of Liberty -- America's famed beacon of freedom and immigration -- and more were expected at airports nationwide.
Travelers were detained at US airports, splitting families -- such as a father unable to reach his son's wedding, and a grandmother unable to meet her grandchildren -- and officials warned it was a "gift to extremists."
Six Syrians were turned away from Philadelphia International Airport and sent back to Lebanon, an official at Beirut airport told AFP on Sunday.
Demonstrators carrying signs chant as they protest outside of the White House during a demonstration to denounce President Donald Trump's executive order (AAP) Source: AAP
The ban was criticised by foreign allies and sparked angry demonstrations at airports in Washington, Chicago, Minneapolis, Denver, Los Angeles, San Francisco and Dallas -- before two federal judges ordered temporary stays.
But Trump -- the real estate billionaire turned Republican commander-in-chief -- was unrepentant on Sunday, defending his policy in the face of growing outrage across the globe and from Americans at home.
"Christians in the Middle-East have been executed in large numbers. We cannot allow this horror to continue!" he tweeted to his nearly 23 million followers.
"Our country needs strong borders and extreme vetting, NOW. Look what is happening all over Europe and, indeed, the world - a horrible mess!" he added.
Attorneys general from 16 US states, including California, New York and Pennsylvania, issued a joint statement on Monday condemning President Trump's executive order.
"We are committed to working to ensure that as few people as possible suffer from the chaotic situation that it has created," the statement said.
Green card backpedal
But his chief of staff Reince Priebus did backpedal over the inclusion of green card holders telling NBC television that the ban "didn't affect them."
But he did stress anyone -- US citizens included -- traveling back and forth to countries on the list would be subject to further screening upon arrival.
"This is something that 75 percent, 80 percent of Americans out there agree with," he insisted.
Trita Parsi, president of the National Iranian American Council, called for greater clarity, telling AFP there was a "tremendous amount of confusion." There are more than one million Iranians living in the United States.
The order -- seemingly implemented without prior coordination with airport authorities and foreign allies -- sparked chaos, leading to around 300 travelers being stopped or detained worldwide after taking effect.
On Saturday night, a federal judge in New York said US authorities could not deport refugees or other people detained on arrival. Slowly, some of those detained were released.
Democratic Senator Chuck Schumer said he had been told 42 people remained in detention Sunday. Top Trump aides downplayed the number as "a couple of dozen."
The Department of Homeland Security agreed to comply with court orders not to deport people, but said it would otherwise continue to enforce the order.
"The US government retains its right to revoke visas at any time if required for national security or public safety," it said in a statement.
Trump fanned further disquiet by giving controversial adviser Steve Bannon, a founding member of far-right website Breitbart News, a permanent seat on the National Security Council at the expense of other security chiefs.
While Bannon was promoted, the Director of National Intelligence and chairman of the Joint Chiefs of Staff will now be present only when "their responsibilities and expertise" are required, said an executive memorandum.
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Overseas outrage
The partial stays -- ordered by federal judges in New York and Virginia -- did not broach the constitutionality of Trump's order, which could ultimately set up a battle in the Supreme Court, which has not ruled on this type of immigration issue since the 1882 Chinese Exclusion Act.
The American Civil Liberties Union had gone to court after two Iraqi men, one of whom had worked as an interpreter for the US military after the 2003 US-led invasion, were detained on arrival at JFK.
The order followed one of Trump's most controversial campaign promises, to subject travelers from Muslim-majority countries to "extreme vetting" -- which he declared would make America safe from "radical Islamic terrorists."
But while it was criticized across the aisle and had Democrats up in arms, the move was endorsed by Republican Speaker of the House Paul Ryan.
McCain said the effect of Trump's immigration order "will probably, in some areas, give ISIS (Islamic State) some more propaganda," and asked why the countries targeted by the order included Iraq, where U.S. forces are fighting alongside Iraqi forces against Islamic State.
"It's been a very confusing process," McCain, a Republican and chairman of the Senate Armed Services Committee, told CBS' 'Face the Nation'.
McCain said he was "worried" about the addition of Trump's chief strategist and former campaign chief Steve Bannon to the US National Security Council. McCain said this was "a radical departure from any national security council in history."
Democrats sought to galvanize outrage to the new president. New York Mayor Bill de Blasio told CNN it was "simply un-American."
German Chancellor Angela Merkel slammed the restrictions as "not justified" and a spokesman said Berlin will examine the consequences for German citizens.
British Prime Minister Theresa May, who met Trump in Washington on a charm offensive last week, said she did "not agree" with the restrictions.
British athletics legend Mo Farah, who was born in Somalia, called it a policy of "ignorance and prejudice" that could keep him apart from his family, based in Oregon, while he is currently training in Ethiopia.
And in Iraq, a key partner in the war against jihadists for more than two years, there were calls for a reciprocal ban on US citizens.