To find detailed contact information for Texas' and the San Antonio area's Senators and Representatives (as well as officials in state and local government) check out our Contact Your Legislators Research Guide.
If you want to see what's going on in the House of Representatives RIGHT NOW, check this out (they also provide archived video on demand):
News about Congress:
Documents Collection (2nd Floor; can be checked out)
Reference books for use in the Library (in Learning Commons, 1st Floor):
The Dirksen Center's Congressional Timeline provides information about each Congress back to 1933 (73rd Congress). They've recently updated the Timeline and added features: in addition to major legislation passed, and basic information for each Congress, they now also offer measures of legislative productivity, information about women and African Americans serving, and links to lesson plans related to legislation for teachers. There's an accompanying collection of photos and documents, as well as video and audio, for each Congress as well.
Of course, lobbying and lobbyists are an important part of the legislative process. Here are some links to information about lobbying:
In depth research about Congress, as well as historical research in many areas, may require access to Congressional papers.