The SSC was killed in the 103rd Congress by a Democratic majority in both the House and the Senate and a Democratic president.
https://www.govtrack.us/congress/votes/103-1993/h526
https://www.govtrack.us/congress/bills/103/hr2445/text
The project was originally championed by Republicans (and Democrats from Texas.)
"Reagan Calls Super Collider 'Doorway to New World'"
March 31, 1988|Associated Press
http://articles.latimes.com/1988-03-31/news/mn-896_1_super-c...
George Bush: Remarks at the Superconducting Super Collider Laboratory in Waxahachie, Texas
July 30, 1992
"Now, the super collider. The super collider is one of the greatest scientific projects in the entire world. This place attracts scientific genius the way our U.S. basketball players attract autograph seekers over there in Barcelona. So for me it is an incredible honor to be among you and to hear of your dreams and accomplishments."
http://www.presidency.ucsb.edu/ws/?pid=21280
But I wouldn't want actual facts to cloud your worldview. You want to know why it was cancelled? Try Google.