It's safety concern. The reps made the RNC a gun free zone. What's your point again?
In case you're not bright enough to recognize the potential for violence, the presidential conventions held every 4 yrs. in America are primary targets for violence. But apparently, if people like you were left in charge, the lack of security would facilitate the violence potential ... nice going ... you must be a rightie.
Building a wall is nonsense. Over half the undocumented immigrants come here legally w/ a Visa/passport then overstay their welcome. No wall is going to stop that. No wall will stop the people w/ forged documents. No wall is going to stop the people who sneak over, under and around it. Mexico won't pay for it. Trump planted the "wall seed' early in his campaign while he had an ulterior motive.
At one of the debates, a rival had the floor talking about the wall and Trump interjected he would build it. He wanted the contract to build the wall but these feeble minded righties miss important subtleties Trump has left for them.
I strongly suspect Congress would never approve it.
America is a free country and w/ that comes problems.
If America wants to address the problem sensibly, it needs to take away their ability to find work by creating a positive ID registry and stepping up the penalty to hire one.
The registry will also address voter fraud and identity theft.