Umm, those 7 Iranians that were released were NOT murderers, they were caught doing business with Iran that was a NO, NO because of the sanctions against Iran. So, you want to keep every businessman whoever made a mistake in jail forever? Next time, educate yourself and then think before you speak on a subject that you are completely ignorant on.
Facts are a stubborn thing.
Here's an excerpt from an article on just one of the seven Iranians released by the soebarkah administration.
The technology Mechanic sold to Iran is used in a wide range of military systems, including surface-air and cruise missiles. Between July 2010 and 2015, Mechanic's network allegedly obtained 28 million parts valued at about $24 million worth and shipped them to Iran through Taiwan and Turkey. Among the parts shipped were microelectronics and digital signal processors, according to the indictment.