Offended? On the contrary, I'm having a great time tormenting the border bunnies! :-D
And I'm happy whenever anything is done to better secure our borders and our nation in general. If "being offended" is really a concern of yours, you might want to check on some of these perpetually pissed-off folks running 'round here. The border bunnies aren't hard to find. Just go to any thread not related to immigration, and they'll be there railing about illegal immigration.
You may treat it as a joke, but many of us are convinced that we are in serious danger of losing our country if illegal immigration is not stopped--and soon. A conservative ought to be able to comprehend that.