evidence: Russian officials have interrogated and threatened U.S. citizens without cause. This includes former and current U.S. government and military personnel and private U.S. citizens engaged in business. U.S. citizens may become victims of harassment, mistreatment, and extortion. [...] Russian security services have arrested U.S. citizens on false charges, denied them fair treatment, and convicted them without credible evidence. Furthermore, Russian authorities have opened questionable investigations against U.S. citizens engaged in religious activity. U.S. citizens should avoid travel to Russia. [...] Russian authorities strictly enforce all visa and immigration laws. The Embassy of the Russian Federation website provides the most up to date information regarding visa regulations. In accordance with Russia’s Entry-Exit Law, Russian authorities may deny entry or reentry into Russia for five years or more and cancel the visas of foreigners who have committed two administrative violations within the past three years. Activities that are not specifically covered by the traveler’s visa may result in an administrative violation and deportation.