U.S. President Donald Trump's promise of a wall on the border with Mexico is taking shape. Testing is underway on eight prototypes built in San Diego, but the project still needs approval for $1.8 billion dollars in funding for construction. CBC News went down to take a look at what's been done so far. Welcome to The National, the flagship nightly newscast of CBC News »»» Subscribe to The National to watch more videos here: https://www.youtube.com/user/CBCTheNational?sub_confirmation=1 Voice Your Opinion & Connect With Us Online: The National Updates on Facebook: https://www.facebook.com/thenational The National Updates on Twitter: https://twitter.com/CBCTheNational »»» »»» »»» »»» »»» The National is CBC Television's flagship news program. Airing six days a week, the show delivers news, feature documentaries and analysis from some of Canada's leading journalists.