Its 2000 tax return is at guidestar.org http://www.guidestar.org/pdf/2000/751/804/2000-751804932-1-9.pdf
In February 2002, Bruce Bartlett of the NCPA argued that the tax code was resposnible for Enron's decline because it rewards borrowers with interest deductions.
(http://www.ncpa.org/edo/bb/2002/bb020602.html) He left out that the tax code also subsidized the $60,000 donation to NCPA from the Lay Family Foundation.
Tim Francis-Wright