[dfc]

Unfortunately I do not remember the link to the GPO page on xml or the XML page on thomas.loc.gov. However there are an awful lot of government documents in xml format. What specifically are you missing? For an interesting site that is using some of the new federal technology openess initiatives (for lack of a better term) take a look at: http://www.govtrack.us/ . Carl Malamud also has an extensive collection of machine readable government documents but sadly http://bulk.resource.org/ and http://public.resource.org/ seem to be down.

Resources:

Gov XML initiative: http://xml.gov/

House XML Initiative: http://xml.house.gov/

Code of Federal Regulations (XML format): http://www.gpo.gov/fdsys/bulkdata/CFR e.g: CFR Chapter 12 (regulation of banks. 12cfr30 is customer information security at banks if you are interested) http://www.gpo.gov/fdsys/pkg/CFR-2012-title12-vol1/xml/CFR-2...

GovTracks About / Data Sources Page: http://www.govtrack.us/about

EDITED: To include links to the Code of Federal Regulations