He's going to a naturalization ceremony at Constitution Hall today, to Mexico later this week.

NPR: Administration Hints at Troop Changes in Iraq

Ms. DICKINSON: And the one reason I accepted this was because the ceremony is being held in DAR Constitution Hall...

NPR: Help 'Ask Amy' Write A Commencement Speech

When City Hall underwent renovations, the Constitution was transferred to the Department of State.

NEWYORKER: The Commandments

The Constitution of UNESCO was signed in the Great Hall of the Institute of Civil Engineers in London on 16 November 1945 by 37 countries.

UNESCO: in the UK

The documents that we hold in this very hall -- the Declaration of Independence, the Constitution, the Bill of Rights -- these are not simply words written into aging parchment.

WHITEHOUSE: President Obama: Our Security, Our Values

On Sunday, 6 June, before departing Ms Irina Bokova joined the National Commissions in the Great Hall of the Institute of Civil Engineers, where UNESCO's constitution had been adopted in 1945.

UNESCO: UK National Commission for UNESCO :: UNESCO Director-General concludes first official visit to UK