Differences (of course), abound:
The Mexican's entering the U.S. border are not carrying AK47's and RPGs. The Mexican's crossing our border are by and large peaceable. If they were not, there'd be a military presence wasting every armed Mexican crossing the border.
The Syrians willingly host Islamic militant front organizations on Syrian soil. They support and train these terrorists. Having failed to expel or arrest the leaders of these organizations, and since Syria in fact actively compensates these militants while on Syrian soil, Syria is implicated in every American death at the hands of their so-called "radical Islamic" mercenaries.
This statement represents an open invitation to U.S. forces to enter Syria to dispatch the terrorist organizations, their foot soldiers, and any Syrian military presence that gets in the way. In fact, I have little doubt our SOF are operating in Syria now.
I believe Syria has just cooked it's own goose.
SFS
My assumption is that you have not been to Los Angeles lately?
RPG's, probably not.
AK47's and other powerful weapons. Yes.
Some kids gunned down just the other week in a "gang" war.
Are all of them violent? Of course not. But with an open border, how do we know who is an who isn't?
One innocent victim is one too many. And LA alone has hundreds each year. And that is only one city.