He fooled Sarah Palin (in a disgraceful stunt) and lots of other luminaries. However, comedian Sacha Baron Cohen also tried to prank a California gun store owner, who immediately saw through his (weird) disguise.
The owner said to Fox News:
“Once I knew it was Borat, we already know his game and his bulls---. So, we knew he’s here to make a mockery, and of what? Gun owners? The gun business? Gun shops?”
Very likely, given Baron Cohen's well-known liberal bias. In any case, Baron Cohen scampered out of the store, unable to use the place as a scene for another one of his unfunny "exposes."