According to the executive order, Trump's action applies to "countries designated pursuant to Division O, Title II, Section 203 of the 2016 consolidated Appropriations Act".
Hours later, Trump convened a "listening session" with top White House, Cabinet and cybersecurity experts in the Roosevelt Room.
The order barred US border agents from removing anyone who arrived in the USA with a valid visa from Iraq, Syria, Iran, Sudan, Libya, Somalia and Yemen. That left open the possibility that citizens of other countries could also face a travel ban.
Arab-American Civil Rights League Chair Nasser Beydoun, whose organization is suing Trum and his administration over the order, added that Former New York mayor Rudy W. Giuliani admitted that Trump wanted a "Muslim ban" and created a commission to show him how to implement one legally.
The prime minister has come under renewed pressure to toughen her stance on the White House's policy which closed the US' borders to seven Muslim-majority nations.
The Visa Waiver Program allows citizens from 38 countries to enter the U.S. for 90 days without a visa. And it ignores the threat from citizens in the United States, Europe and other friendly locations who are radicalized at home.
The order, which also suspends refugee admissions for 120 days and indefinitely bars the processing of refugees from Syria, has sparked widespread protests and denunciations from Democrats and a handful of Republicans.
Steve Bannon gets permanent seat on Trump's National Security Council
Also attending was the chairman of the Joint Chiefs of Staff , the highest-ranking military official in the USA government. Bannon has had an important role in the early days of the Trump administration.
And while he wrote: "I have tremendous feeling for the people involved in this horrific humanitarian crisis in Syria", Trump reiterated his primary focus was on United States national security. "My first priority will always be to protect and serve our country, but as President I will find ways to help all those who are suffering". The ripple effect still is being felt from global high-tech companies to university campuses to the National Basketball Association.
A federal judge in NY on Saturday night granted an emergency stay, temporarily halting the removal of people detained following Trump's order.
Both had entered the United States as refugees after lying about their past terrorism ties on paperwork.
Gelernt said the ACLU is waiting for a list of detainee names from the government to try to determine who has been detained.
Even some conservative Republicans expressed unease about the constitutionality of the Trump order. And the two largest terror attacks in the USA were done by people with connections to countries not on the list.
It remains unclear how many people are still being detained at various airports. Sen.
"You are going to see a lot of additional legal challenges to this executive order in the coming days", he said.
The move prompted protests at airports across the country. The crowds chanted "USA, USA" and sang "this land is my land, this land is your land" as detainees were released.
Hundreds of protesters at New York City's Kennedy Airport demonstrated against the detentions, The Associated Press said.
President Trump on Wednesday took the spotlight off his Supreme Court nominee and instead trained it back on his controversial order temporarily restricting travel from seven countries, arguing the effect of the action is what matters, not the language.
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