Ahmadreza Mohammadi-Doostdar, 39, a dual U.S.-Iranian citizen, and Majid Ghorbani, 60, an Iranian citizen and resident of California, have entered pleas of guilty to charges stemming from their conduct conducting surveillance of and collecting identifying information about American citizens and U.S. nationals who are members of the Iranian dissident group Mujahedin-e Khalq (MEK).