Immigration.
It is out of control and completely broken. I do not think anything will get done on it. Both shit hole parties are too partisan to work together. and they need 60 for that to pass. I think both parties want those poor DACA kids right where they are they want it to fail so they can blame each other.
The wall.
Waste of money, The money spent to build that wall should be spent actually fix border security. More drones tunnel detectors and such. Maybe in some areas a wall is needed IE San Diego. In the middle of nowhere a drone with infrared will do the trick. Kinda hard to escape your body heat lol/