Not across the entire border. America and Canda are separated in most places by rivers, mountains, cliffs, and forest. Building a wall wouldn't add any noticeable protection in these areas.

But as a Canadian, I agree that many parts of the border need walls, specify near towns and habitable areas.

He is a huge help for communities under attack from leftists. He also helped out the Youtube channel MxRMods (not me, but I moderate the subreddit) back when Youtube and Jukin media (Chinese copyright troll company) tried to blackmail him.