For assistance in submitting a White House tour request citizens of a foreign country until now needed to contact their respective embassies in Washington, DC. Please be advised due to staffing reductions resulting from sequestration, the White House has suspended tour requests, beginning Saturday, March 9, 2013 until further notice.
For new inquires about WH tours please follow the White House website.
Other tourist information e.g. what to do in Washington, DC etc. you can find here.