Michelle Richardson of the ACLU has compiled a very helpful list of legislation proposed since the NSA leaks started in June:
Currently there are 19 bills pending in Congress with more expected to be introduced. The legislation can be broken down into four broad categories: 1) substantive reforms to the laws the NSA believes allow it to conduct its surveillance programs, 2) disclosure of the FISA Court opinions that determined the programs were legal, 3) general reporting of the number and types of surveillance orders received by recipients and how many users affected, and 4) reforms to the FISA Court.
See her chart that summarizes the key feature of each proposed law on ACLU.