Jie Li made outstanding results in the 2001 Toyota/Denso Oza tournament, when he was undefeated against 4 pros, including 9-dan Jiang Zhujiu. The Fall 2001 / Winter 2002 issue of American Go Journal features him on the cover, and has two of his games plus a brief biography.
Jie Li has won the US Open Championship four times: 1998, 2002, 2003 and 2004. He has also won the North American Amateur Ing Cup in 2002 and 2004.
The game record from the 3rd round of the 2001 Toyota Denso Oza tournament, when Li beat Jujo Jiang, was posted in rec.games.go and is on the web with commentary by Li at http://www.hilltopgo.com/agej/2002/Toyota_2001_Oza_Jie_Li-ZhuJiu_Jiang_ver2.sgf.
Juan: On November 28th, 2004, Jie Li defeated Suzuki Ayumi 3P in the 5th Tokyo Seimitsu Cup finals, breaking the U.S. losing streak. Suzuki, the current titleholder of "Strongest Woman" in Japan, was forced to resign in the game with Jie Li, who took black. After the game, a Japanese pro commented that black was "very strong".
If you are a member of the AGA, look in the November 29th's eJournal edition. It includes an SGF of their game, analyzed and commented by Jie Li himself.