"I am an Iraqi national working for a major investment bank in the City of London. The US government has banned travel to its shores by nationals from Iraq and six other countries but my job requires frequent travel, including to the US. I am concerned this ban will stop me from being able to do my job. Where does it leave me?"

The executive order issued by US President Donald Trump on Friday, January 27 has caused widespread chaos, confusion and panic, so your concerns are not surprising.