[crazygringo]

None of your arguments make any sense to me.

It doesn't seem expensive -- it's literally a configuration option on the scanners already installed.

It doesn't have anything to do with stolen goods generally, it's simply about detecting stacks of cash that there's already a specific law stating that you must declare when leaving the country.

By definition this isn't regular domestic policing, because it's inherently an issue that can only occur at the border.