Project Veritas prankster James O'Keefe has been getting stopped at the border ever since he published his hilariously embarrassing videos of unchallenged border crossings dressed as Osama bin Laden or an ISIS terrorist. I can't say I blame DHS for that; if they know he habitually stages illegal border crossings, they might reasonably scrutinize him to determine whether he's carrying contraband to make a point. Yes, it's fairly clear they would be doing so to avoid embarrassment rather than to prevent harm to the U.S., but I can live with it, as can O'Keefe.
The pointed questions about what his next exposé is going to target, though, and the questions about which candidate he's going to support, are just creepy.
This time, the border agents thought to ask him if he was filming the interview, which he wasn't, though they didn't ask if he was recording the sound, which he was. I imagine there will be flak over that, too.
All this is annoying and discouraging, but in a way it's good news. There are countries where, if you pulled this kind of stunt, they'd just quietly kill you.