> CBP agents at the border accused Brösche of planning to violate the terms of the visa waiver program by intending to work as a tattoo artist during her trip to LA, Lofving said.
This seems to be key point - but sounds awfully subjective if you can just be accused. Did she bring her tattoo equipment or something? I mean a person could type or code on a laptop too for work...
Edit: yes, apparently:
> According to Lofving, Brösche had equipment on her that she used for tattooing, and this may have been part of the reason for her detention.
https://www.tag24.com/lifestyle/tattoos/vacationing-tattoo-a...
Still seems a dumb criteria.