The Trump administration is halting all asylum decisions in the wake of the shooting of two National Guard soldiers in Washington DC, US Citizenship and Immigration Services (USCIS) director Joseph Edlow has said.

On Friday, in a post on X, Edlow said the pause would be in place "until we can ensure that every alien is vetted and screened to the maximum degree possible".

The announcement comes hours after President Donald Trump pledged to "permanently pause migration" to the US from all "third world countries".

On Thursday, Trump announced that a US National Guard member had died from her injuries after Wednesday's shooting, for which an Afghan national has been blamed.

Officers at the USCIS, a branch of the Department of Homeland Security, were instructed to refrain from approving, denying or closing asylum applications received by the agency for all nationalities, according to reporting by CBS News, the BBC's US partner.

According to guidance seen by CBS, officers could continue to work asylum application and review cases up to the point of making a decision.

"Once you've reached decision entry, stop and hold," the directive said.

There are still few details available about both Friday's directive and Trump's earlier remarks.

Trump did not name which countries might be affected by his plan. Such a move could face legal challenges and has already prompted pushback from UN agencies.

Both announcements followed Wednesday's fatal attack, and represent a further toughening of the Trump administration's stance towards migrants during his second presidency.

Among other moves, Trump has sought to enact mass deportations of migrants who entered the US illegally, to drastically cut the annual number of refugee admissions, and to end automatic citizenship rights that currently apply to nearly anyone born on US territory.

In the wake of Wednesday's shooting, Trump promised to remove from the US any foreigner "from any country who does not belong here". The same day, the US suspended processing all immigration requests from Afghans, saying the decision was made pending a review of "security and vetting protocols".

Then on Thursday, the USCIS said it would re-examine green cards issued to individuals who had migrated to the US from 19 countries. The agency did not explicitly mention Wednesday's attack.

When asked by the BBC which countries were on the list, the USCIS pointed to a June proclamation by the White House that included Afghanistan, Cuba, Haiti, Iran, Somalia and Venezuela. There were no further details about what the re-examination would look like.

Trump's strongly worded two-part post on Thursday night went further still, pledging to "end all federal benefits and subsidies to noncitizens".

The US president wrote on Truth Social that this would "allow the US system to fully recover" from policies that had eroded the "gains and living conditions" of many Americans.

In the post, the president also blamed refugees for causing the "social dysfunction in America" and vowed to remove "anyone who is not a net asset" to the US.

He said that "hundreds of thousands of refugees from Somalia were completely taking over the once great State of Minnesota" and took particular aim at the state's Democratic lawmakers.

"I will permanently pause migration from all Third World Countries to allow the U.S. system to fully recover," the president wrote.

The phrase "third world" is a term that was used in the past to describe poorer, developing nations.

The president had already imposed a travel ban on nationals of Afghanistan – and 11 other countries, primarily in Africa and Asia – earlier this year. Another travel ban targeting a number of majority-Muslim countries was enacted during his first term.

The UN responded to Trump's words by urging his administration to observe international agreements regarding asylum seekers.

"We expect all countries, including the United States, to honour their commitments under the 1953 Refugee Convention," the deputy spokesperson for the UN secretary general told Reuters.

The Trump response amounted to a "scapegoating" of migrants in the US, argued Jeremy McKinney, president of the American Immigration Lawyers Association.

Speaking to the BBC World Service's Newsday programme before Trump's latest comments, Mr McKinney highlighted that the attacker's motive was not known.

"These types of issues - they don't know skin colour, they don't know nationality," he said. "When a person becomes radicalized or is suffering some type of mental illness, that person can come from any background."

He travelled under a programme that offered special immigration protections to Afghans who had worked with US forces in the wake of the American withdrawal from Afghanistan.

Mr. Lakanwal previously worked alongside the CIA, the agency's current director has said.

Mr. Lakanwal would have been vetted by the US both at the time the he started his work alongside the CIA, and when he ultimately travelled to the US, according to a senior US official who spoke to CNN.

A childhood friend told the New York Times that Mr. Lakanwal had experienced mental health issues after his work with his unit.

Mr. Lakanwal later applied for asylum in 2024. His application was reportedly granted earlier this year, after Trump returned to power.

But his request for a green card, which is tied to the asylum grant, is pending, a Homeland Security official told CBS.

The suspect was arrested after the attack and was said to be not co-operating with authorities. Trump described the incident as an "act of terror".

He said the following day that one of the two members of the National Guard who were shot had died.

Sarah Beckstrom, a 20-year-old from West Virginia, was working in the city as part of Trump's deployment of National Guard members to crack down on crime.

She had volunteered to work in DC over the US Thanksgiving holiday, Attorney General Pam Bondi said.

The second National Guard member, 24-year-old Andrew Wolfe, was said by Trump to be "fighting for his life". (BBC)

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