What do you think they have down there, a country full of trapeze artists?
LOL.
Near zero. However, what percentage of Mexican women and men would actually be facing soldiers opening fire on them with those weapons? Also near zero.
Consider this point also: they wouldn't be allowed to shoot that stuff into MEXICO (hint hint), they'd have to wait until they were already on top of the wall and descending.
What do you think they have down there, a country full of trapeze artists?
No. What do you think we have up here, an infinite number of soldiers?