Russian national and gun-rights advocate Maria Butina traded sex for a position in a special-interest organization, according to U.S. prosecutors who asked a judge to keep her in jail before trial because of her ties to Russian intelligence services. Butina, 29, faces federal charges that she illegally conspired to establish a back channel between Russians and American politicians during the last election cycle and operated as an unregistered agent of the Russian Federation in the U.S.