It has, however, now been clarified by the British Foreign Office how Sir Mo and others in his position will supposedly only be affected if travelling to the US from one of the countries specifically targeted.

Trump, who was inaugurated as the 45^th President of the United States earlier this month, signed an executive order which prohibits citizens from the seven Muslim-majority countries - Syria, Sudan, Somalia, Yemen, Iraq, Iran and Libya - from entering the country for a 90-day period.

The ruling has been fiercely criticised around the world and Iran has already launched retaliatory restrictions on US nationals.

It is not yet completely clear how extensive the restrictions, which are currently only a 90 day temporary measure, will be.

But citizens from the seven countries have already been prevented from entering the US.

Britain's Sir Mo, who won 5,000 and 10,000 metres gold medals at the London 2012 and Rio 2016 Olympics, was born in Somalian capital Mogadishu and grew up in neighbouring Djibouti before moving to Britain at the age of eight.

In 2011, he and his family moved to Portland, Oregon in order to train with US coach Alberto Salazar.

He is now a full British national and does not hold a Somalian passport.

The 33-year-old, who is currently at a training camp in Ethiopia, has admitted to being unsure if he will be allowed to return home before the clarification was made later today.

"On January 1 this year, Her Majesty The Queen made me a Knight of the Realm," the five-time world champion posted on Facebook today.

"On January 27, President Donald Trump seems to have made me an alien.

"I am a British citizen who has lived in America for the past six years - working hard, contributing to society, paying my taxes and bringing up our four children in the place they now call home. 

"Now, me and many others like me are being told that we may not be welcome. 

"It’s deeply troubling that I will have to tell my children that Daddy might not be able to come home - to explain why the President has introduced a policy that comes from a place of ignorance and prejudice.

"I was welcomed into Britain from Somalia at eight years old and given the chance to succeed and realise my dreams. 

"I have been proud to represent my country, win medals for the British people and receive the greatest honour of a knighthood. 

"My story is an example of what can happen when you follow polices of compassion and understanding, not hate and isolation."

Sir Mo later added that he was "relieved" by the Foreign and Commonwealth Office clarification - which followed discussions with the White House - but "still fundamentally disagrees with this incredibly divisive and discriminatory policy"

A Federal Judge yesterday blocked part of the executive order relating to deportations, but this is thought not to affect the initial restrictions.

The White House has also made clear that even those holding green residency cards will require additional screening before being allowed into the country.

Other sportspeople potentially affected by the ban include National Basketball Association (NBA) star Luol Deng, who was born in Wau in what was then part of Sudan.

Wau now lies in South Sudan, the world's newest nation which split from its northern neighbour in 2011 and is not included on the US list, although it is not yet clear how much impact this will make.

Deng, who now plays for the Los Angeles Lakers, fled Sudan for Egypt aged five before growing up in London as a British citizen before moving to United States to pursue a professional career.

He represented Britain at the London 2012 Olympic Games.

The NBA have reportedly contacted the US Department of State for "clarification".

Somalian-born four-time US distance running Olympian Abdi Abdirahman is another who may be affected.

"We clearly need to understand the implications of  this new US immigration policy and will be seeking assurances that it will not adversely affect the IAAF World Championships in the USA in 2021," an International Association of Athletics Federations (IAAF) spokesperson told insidethegames today.

The International Olympic Committee (IOC) have so far refused to react, claiming how they do "not comment on the politics of sovereign countries."

But St Lucia's IOC member Richard Peterkin wrote on Twitter that the ban is "totally contrary to Olympic ideals".

At least one IOC member, Syria's Samih Moudallal, is thought to be implicated.

Others could also be if, as Trump has mooted, the ban is eventually extended to more countries.

The IOC introduced a special Refugees Olympic Team including two Syrian athletes at Rio 2016.

This also comes as Los Angeles bids against Budapest and Paris for the right to host the 2024 Olympic and Paralympic Games.

A vote is scheduled for September 13 at the IOC Session in Lima, where it is still feasibly possible that Trump could attend.

The LA Bid Committee have not yet formally commented, but city Mayor and staunch bid backer Eric Garcetti has criticised the order on the grounds as it "unfairly targets refugees" and "there is no evidence that this approach will improve national security".

“We are working closely with the administration to understand the new rules and how we best navigate them as it pertains to visiting athletes,” United States Olympic Committee spokesperson Patrick Sandusky told the New York Times.

“We know they [Trump's administration] are supportive of the Olympic Movement and our bid and believe we will have a good working relationship with them to ensure our success in hosting and attending events.”

The US freestyle wrestling team is scheduled to participate in a United World Wrestling World Cup competition in Kermanshah, Iran on February 16 to 17.

insidethegames has contacted the world governing body for a reaction.

Anaheim in California is also due to host the 2017 International Weightlifting Federation World Championships from November 28 until December 5.

Iran are among the strongest nations in the sport.

Many athletes from the other six restricted countries would also be expected to participate.