Contact and Monitor the US House and Senate

Contact them:
View US House Members by State and/or Contact Them
View US Senators by State, etc. and/or Contact Them

Monitor bills they are considering:
"Thomas" Database at US Library of Congress. All sites below source heavily from Thomas.

See how they voted:
US House 2009 Roll Call Index
US Senate 2009 Roll Call Index

Analyze Votes and Bills:

US House Votes at Washington Post and US Senate Votes at Washington Post The Washington Post Votes Database slices and dices, grouping by Yes-No-Present, Zodiac, etc.

US Roll Call Votes at GovTrack has pie charts, cartograms, and other analytics. Bill tracking, research, blogging, and more at GovTrack.

US Bills at OpenCongress has dashboards of status, cross-references, news, and blogs. News, tracking, commentary, community at OpenCongress by the "Sunlight Foundation".