(Portland, OR)  --  Former U.S. figure skating champion and Portland native Tonya Harding now says she knew her ex-husband was involved in the attack on skating rival Nancy Kerrigan.  In an interview that aired last night on ABC, Harding said shortly after the 1994 U.S. figure skating championships, which she won, she figured out that her ex-husband Jeff Gillooley and the others had likely been behind the attack.  She said she'd overhead Gillooley and a friend talking before the championships about taking someone out so Harding would be sure to make the Olympic team.