Issued in DFW by AA. Maybe Texas gets special treatment these days in view of the political connections. I think non-US origin tickets with exotic routings are automatically flagged for special attention; rather glad that US-origin is not flagged. I've been told (but don't believe it) that FF status also plays a role.
I hate to say it, but I've noticed that security at non-US airports is generally much more effective and much more conscientious that at US airports. Particularly for US-bound flights, but even for general traffic. And the checking is faster and smoother, maybe the US should hire some consultants to get the processes better organized.