All he needs to to is tweet or have Sanders put out a press release EVERY single DAY about trouble at the border, crimes committed by illegal aliens, immigration statistics, drug busts, etc - what ever is in the news that day that shows how important the wall is.
End every one with “Our nation is in danger because we don’t have border security - tell the Democrats to Built The Wall!”.
Lather, rinse, repeat...
People only remember what they’ve been told, time after time. Nobody learned the multiplication table by have read it one time, this needs to become a mantra...a drumbeat...
Build The Wall! And everything that happens until it is built is the Democrats fault.
Sounds good, but how will the American people hear this???
The Lame Stream Media sure as hell won’t repeat it....