Hi.
The construction on the wall has begun in several places in CA, NM and TX. But full funding to complete the wall is being held hostage by Ryan and McConnell.
If President Trump wants to he can declare a state of emergency regarding national security and have the Army Corp of Engineers build it out of the defense appropriation.
5.56mm
No New wall, just repairs and some replacements. Not one section has been started that would use one of the prototypes they showed off.