Even a redress number is no guarantee against TSA harassment at the border, although that's not a new thing. On The Media had an episode featuring the story of one of its producers' experience at the US-Canadian border in 2013, during which a group of US citizens were held without cause other than the fact that they were Muslim.[1] One of them had a redress number, but the CBP agent told him that it didn't matter and wouldn't help.

[1]: http://www.wnyc.org/story/my-detainment-story-or-how-i-learn...