Probably because they make plenty of money with the current BCS format that they don't need to rock the boat.
The LSU Tigers won the 2007 season national championship on Jan. 8 2008
Go to the following web site:
Notre Dame
Princeton and Rutger "split" the title in 1869 (both had 1-1 records). The first non-Ivy League school to make a claim was Lafayette in 1896 (11-0-1 record), though Princeton also makes a claim to...