They already do. It's called STANAG.

Let's assume that by some random craziness that they are telling the truth and it is legal to do this..
Just because it's legal doesn't make it right.
As time goes on I think we are finding both sides of both lines - the legality line and the morality (for lack of a better term) line. There are things that fall on both sides of both lines. Sometimes just because it's illegal doesn't make it immoral and just because it is legal it doesn't make it moral.
The whole thing is that it tells you that the government doesn't always run things through their own personal sanity checks..