They need it more than ever has the Muslim Brotherhood and other Jihadi terrorists link up and expand.
The way the Middle East is going, Israel will have to build a moat, electrified Barbwire fence, mine field and automatic machine gun posts just to survive.
Then again, a missile easily crosses borders.
America MUST be a barrier.
Israel was criticized for beginning to build these walls in 2002. Now, it looks like the best bet for many nations, including the Arabs themselves, note the Saudi-Yemenite border today. NOBODY talks about Arab fences, only Jewish ones.
Massive walls also work. Israel has one also.