Because, in support of spending billions on border security, John McCain just compared the border fence to the Berlin Wall:

“I think that, first of all, the legislation concerning beefed up border security removes any validity to the argument that border security is not sufficient,” McCain said during an appearance on CNN. “I mean, this is not only sufficient, it is well over sufficient. We’ll be the most militarized border since the fall of the Berlin Wall so that’s why I think this amendment was very important.”

Seriously, you are comparing border security measures to the Berlin f%$#ing Wall, and you are supporting this measure, you are too stupid, or too senile, to cut your own meat.