This is something I've wondered. I watch border security shows (Australia Front Line, Nothing To Declare UK, Border Security Canada) and when customs officers are suspicious that travelers may be carrying drugs on their person, they give them a frisk search.
These searches are always performed by someone of the same gender. I wonder can the person request it be done by the opposite gender (i.e. if a male traveler, they get frisked by a female customs officer and vice versa).
How does this work in regards to transgender individuals?