As of 2007, not a single U.S. government researcher had been prosecuted for human experimentation. Many of the victims of U.S. government experiments have not received compensation or, in many cases, acknowledgment of what was done to them.
And of course when the Americans found out about other countries' unethical human experimentation they got the perpetrators and... protected them from persecution.
http://money.cnn.com/2014/05/29/investing/gdp-economy/U.S. economy shrinks, but it's not a big deal
By Annalyn Kurtz @AnnalynKurtz May 29, 2014