Barrier...

"I voted numerous times when I was a senator to spend money to build a barrier to try to prevent illegal immigrants from coming in," Clinton told an audience.  

Clinton voted for the Secure Fence Act of 2006, which President George W. Bush signed. It authorized about 700 miles of fencing along certain stretches of land between the border of the United States and Mexico.

The act also authorized the use of more vehicle barriers, checkpoints and lighting to curb illegal immigration, and the use of advanced technology such as satellites and unmanned aerial vehicle. 

The act called on the Department of Homeland Security to install at least two layers of reinforced fencing along some stretches of the border.  

It is not a wall, it is a fence.