The wall - from the article

Although wall construction began during Bill Clinton’s administration, the Department of Homeland Security (DHS) built most of the approximately 700 miles of fencing after the Secure Fence Act of 2006 was passed. At the time, Senator Hillary Clinton voted in favor of that Republican-introduced bill, along with 26 other Democrats. “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,” she commented at one 2015 campaign event, “and I do think you have to control your borders.”

Trump will build a bigger and better wall and Mexico will dig a deeper and better tunnels under it. Self-defeating and a GROSS WASTE of TAX-PAYERS money. Go figure...