In order to allow for the installation of scaffolding and floor, statuary, and artwork protection in conjunction with the Dome Restoration Project, the Rotunda of the Capitol will be closed from Monday, July 27 through Monday, September 7. While the Rotunda is unavailable for tours, an alternate tour route will be provided. The Capitol Visitor Center is open during the closure of the Rotunda and will offer special activities which do not require advance reservations. You can also download our new U.S. Capitol Rotunda app.

Exhibit Theme

Documenting the Discoveries

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Treaty of Guadalupe Hidalgo,...
Image Caption

Treaty of Guadalupe Hidalgo, printed treaty with handwritten notations, March 10, 1848

After considerable debate, the U.S. Senate approved for ratification the Treaty of Guadalupe Hidalgo on March 10, 1848, by a vote of 38–14. This annotated Senate copy indicates controversial points in Article V, which designated an 1847 map by J. Disturnell as the basis for the U.S.-Mexico boundary. The Senate rejected a clause limiting changes to that boundary.

Records of the U.S. Senate, National Archives and Records Administration