According to the White House, the guy who's currently the head of the US wants to build a see-through border wall:
One of the things with the wall is you need transparency... As horrible as it sounds, when they throw the large sacks of drugs over, and if you have people on the other side of the wall, you don't see them, they hit you on the head with 60 pounds of stuff? It's over. As crazy as that sounds, you need transparency through that wall. But we have some incredible designs.
So, it sounds like pretty soon we're going to be in an Emperor's New Wall type of situation. "Of course there's actually a wall, I build the best transparent walls! This wall is 70-feet tall, trust me, I know walls. I, Donald Trump, single-handedly just solved the epidemic of flying Mexican border drugs!"
This is what we've learned today: the source of all of America's drug problems is Mexicans hurling 60-lb sacks of "stuff" over the border, one at a time. Building a regular, un-see-through wall along the border will not ameliorate the situation. Build a transparent wall: America = great again!
I just hope that once this transparent "wall" is built, Trump flies all his Cabinet members there to mime being stuck behind it, all the while fawning, "oooo... such an honour to be behind your wall, Mr. President. You're such a good wall builder!"