Watch: President Trump announces travel ban from "high-risk regions"

The United States is gearing up to host the world's two biggest sporting events in the next three years, the 2026 Fifa World Cup and 2028 Olympic Games.

They are events which ordinarily see a host nation attract hundreds of thousands of visitors from across the globe.

So will a new travel ban issued by US President Donald Trump have an impact on the tournaments? And what about the ban's effect on the wider world of sport?

The policy places full restrictions on citizens of 12 countries entering the United States, as well as partial constraints on seven others as part of an immigration crackdown he says is needed over security threats.