It was sealed during bill's time in office. From my understanding, Since 2001 they began allowing the public to make copies at the Wellesley's library. But copies cannot be checked out Or something like that. I'm certain it was sealed for several years.

From Wikipedia: The thesis was made available after the Clintons left the White House in 2001 by the Wellesley College archives. It first received public exposure in 2005 when msnbc.com investigative reporter Bill Dedman sent his journalism class from Boston University to read the thesis and write articles about it, and one of the students, Rick Heller, posted his article online that December.[15] The thesis is also available through interlibrary loan on microfilm, a method reporter Dorian Davis used when he obtained it in January 2007, and sent it to Noonan and to Amanda Carpenter at Human Events, who wrote a piece[16] on it in March.

The suppression of the thesis from 1993 to 2001 at the request of the Clinton White House was documented in March 2007 by reporter Dedman, who read the thesis at the Wellesley library and interviewed Rodham's thesis adviser

Interest in the thesis and in Clinton's relationship with Alinsky continued during the 2008 Democratic Party presidential primaries, as Clinton battled Illinois Senator Barack Obama, who had also been reported to have been exposed to Alinsky-style ideas and methods during his time as a Chicago community organizer.