What would Trump's border wall mean

During his campaign, U.S. President Donald Trump vowed repeatedly to build a wall along the border with Mexico. Last month, the U.S. Congress approved funds to install new fencing.
The new construction is forcing American communities along the border to consider the effect a wall would have.


(Source: CGTN America, https://www.youtube.com/watch?v=ey5Vm9ltbWg)