This came up over in the Newsstand forum. I thought I remembered someone saying here that there is a point of no return when entering the checkpoint. That is, say I enter the checkpoint, and then when I realize that the search is going to involve feeling my breasts I decide that I no longer want to consent to the search and wish to leave the airport unmolested (literally). Can the police arrest me at that point for refusing search?

It came up in the context of airports trying to re-screen arriving passengers before letting them into the terminal. Would this be a similar situation in which there is no way to withhold consent for a search? Could someone be arrested for refusing to allow their possessions or person to be re-searched at that point?