The U.S. State Department's website can be accessed from any state, but individual states have no part in its operation. The State Department is a federal government agency responsible for U.S. diplomatic relations with foreign countries, as well as the operation of U.S. embassies and consulates abroad. It also handles elements related to the travel of U.S. citizens to and from foreign countries, including issuing passports, visas, and travel advisories and warnings.
The U.S. Department of State is run by the Secretary of State, who is a cabinet-level member of the executive branch and is appointed by the President. The Secretary of State is the face of the U.S. for dealing with foreign countries regarding international disputes, negotiations and treaties.
The State Department handles all of the necessary documentation for international travel and provides support and protection for Americans living or traveling abroad. U.S. embassies and consulates run by the State Department are considered sovereign U.S. soil and a safe haven for any citizens on the grounds.
The State Department is also responsible for keeping both the president and the American people updated on the status of relationships between the U.S. and all other countries. It also assists businesses with trade and international business issues.