I understand his philosophical views on the matter that guns should not be regulated.
However, as it stands today, everything is regulated. Including citizenship. In theory, you need a valid residency to do just about anything and, by extension, a valid identification given to you by the state. This sucks, and is a valid complaint. However, citizens play ball because it is now commonly required, and singular(hyperbole of course) objection to that does nothing to impact that requirement. Allowing someone who is not a citizen and does not have valid residency, even excluding those partaking in identity theft, to just go around enjoying the fruits and freedoms of our labor without strings attached is a direct slap in the face to those who reside within the system that we have to tolerate and is unfair in a moral sense; therefore it saps the agreement and power behind any legal argument that could be made.
tl;dr: get fucked retard
p.s. what does this have to do with getting rid of the NFA