US President Donald Trump declared a national emergency at the US-Mexico border, and he plans to send his troops to help support immigration agents and restrict access to refugees and asylum seekers.

Venezuelans once again watched as Nicolás Maduro was sworn into office on Friday, donning the executive sash and declaring himself president despite irregularities and questions around his election.

The United States on Friday imposed new sanctions on eight Venezuelan officials and increased to $25 million the reward it is offering for the arrest of President Nicolas Maduro on the day of his inauguration to a third term following a disputed election last year.