Updated July 16, 2017 00:23:30

Photo: The girls' case became a flashpoint in the debate about Mr Trump's efforts to tighten entrance to the US. (AP: Massoud Hossaini)

Twice rejected for US visas, an all-girls robotics team from Afghanistan has arrived in Washington after an extraordinary, last-minute intervention by President Donald Trump.

The six-girl team and their chaperone completed their journey early on Saturday morning (local time) from their hometown of Herat, Afghanistan, to enter their ball-sorting robot in the three-day high school competition starting on Sunday in the US capital.

Awaiting them at the gate at Washington Dulles International Airport were a US special envoy and Afghan Ambassador Hamdullah Mohib, who described it as a rare moment of celebration for his beleaguered nation.

"Seventeen years ago, this would not have been possible at all," Mr Mohib said.

"They represent our aspirations and resilience despite having been brought up in a perpetual conflict.

"These girls will be proving to the world and the nation that nothing will prevent us from being an equal and active member of the international community."

In the short time since their visa dilemma drew global attention, the girls' case has become a flashpoint in the debate about Mr Trump's efforts to tighten entrance to the US, including from many majority-Muslim countries.

Afghanistan is not included in Mr Trump's temporary travel ban, but critics have said the ban is emblematic of a broader effort to put a chill on Muslims entering the US.

Photo: The US granted the girls parole after determining it constituted a "significant public benefit". (AP: Rahmat Gul)

The girls' story also renewed the focus on the longer-term US plans for aiding Afghanistan's future, as Mr Trump's administration prepares a new military strategy that will include sending more troops to the country where the US has been fighting since 2001.

Defence Secretary Jim Mattis said on Friday the strategy was moving forward but "not finalised yet".

Initial concerns girls would stay in US

Mr Trump's personal intervention earlier in the week using a rare "parole" mechanism to sidestep the visa system ended a dramatic saga in which the team twice travelled from their home in western Afghanistan through largely Taliban-controlled territory to Kabul, where their visa applications were denied twice.

The US has refused to say why the girls were rejected for visas, citing confidentiality.

As the reality of US President Donald Trump's executive order on immigration hits, immigrants and their relatives grow anxious about what it means for their loved ones.

But Mr Mohib said based on discussions with US officials, it appeared the girls were rebuffed due to concerns they would not return to Afghanistan.

It is a fate that has beset many Afghans seeking entry to the US in recent years as continuing violence and economic challenges lead many to seek asylum in America, or to travel through the US to Canada to try to resettle there.

As their case gained attention, Mr Trump intervened by asking National Security Council officials to find a way for them to travel, officials said.

Ultimately the State Department, which adjudicates visa applications, asked the Homeland Security Department to let them in on "parole", a temporary status used only in exceptional circumstances to let in someone who is otherwise ineligible to enter the country.

The US granted parole after determining it constituted a "significant public benefit".

Photo: Members of the team work on their robots in Herat province, Afghanistan. (Reuters: Mohammad Shoib)

Ambassador Alice Wells, the acting US special envoy for Afghanistan and Pakistan, downplayed concerns the girls might use the parole to stay in the US or go to Canada.

She said the girls were proud to represent Afghanistan and "proud to return to be role models to others around them".

Taliban denied schooling to girls when in power

Competing against entrants from more than 150 countries, the girls will present a robot they devised that can recognise blue and orange, and sort balls into correct locations.

They will also be feted at a hastily arranged reception at the Embassy of Afghanistan attended by supporters who had petitioned the US to let them in.

The Taliban, ousted by the US-led coalition in 2001, denied schooling to girls when they ruled the war-torn country.

Ms Wells said since 2002, the number of Afghan children attending school had increased from about 900,000 — virtually all boys — to 9 million today, including 40 per cent girls.

"We're looking to ensure that Afghanistan continues its trajectory to stabilising politically and economically," Ms Wells said.

"It's young women like these that are going to be the future of Afghanistan."

AP

Topics: world-politics, government-and-politics, women, community-and-society, education, robots-and-artificial-intelligence, science-and-technology, united-states, afghanistan

First posted July 16, 2017 00:16:06