President Trump has promised that prototypes for a wall along the US-Mexico border will be ready by the end of summer. But will a wall stop people smuggling and drug trafficking? Show more
Discover 11,128,835 listings and 280,383 playable programmes from the BBC
President Trump has promised that prototypes for a wall along the US-Mexico border will be ready by the end of summer. But will a wall stop people smuggling and drug trafficking? Show more