Just say the 'Wall' is immoral...it will work.

The US Democrats convene their 'think tank' policy.
'I know we will get them on the moral issue, Nancy you go on the airwaves and state the Wall is immoral,'

The voting public wont understand what the litmus test is of a moral action? Just say it as if moral was stand alone, its disinterestedness is paramount as 'moral' has  universal acceptation, it is a philosophical sledge hammer...ok we know it is ouija board stuff but hey if it works,,,,what the hell'