Opinion here
The latch striker, the U piece, is screwed to the Jamb not welded - Duh. My book says how to remove and install it. (take the screws out) Weather when it is loosened there is movement so it can be positioned in and out it doesn't say. There is what is called a latch adjustment:
DOOR LATCH ADJUSTMENT
(1) Locate access hole (Fig. 79).
(2) Insert a 5/32-inch hex-wrench through hole and
into adjustment screw. Loosen screw.
(3) Operate outside handle button several times to
release any restriction because of mis-alignment.
(4) Tighten adjustment screw to 3 N·m (30 in-lbs)
torque.
(5) Test handle button and lock cylinder for proper
operation.
But looking at the picture this has to do with the push button on the handle and latch workings, not moving the latch itself in and out.
On mine the doors flanges of the front and rear door are slightly out from each other and the trim makes it look like it is quite a ways. The actual water tight hatch , inside, that which fits into the jamb and against the rubber seals is the important part. I don't think I would mess with it if weather in not getting in and the computer indicates the door is locked. Aligning that latch striker, if it does mover around, is not going to be simple. Can you get a picture?