In 2004, he was named a defendant in two court cases, as Chen Che-nan and Chang Ching-fang separately charged Lee with libel.

[5] Later that year, Lee offered to resign his legislative seat, as PFP chairman James Soong attempted to join the body and engage President Chen Shui-bian in debate.

[6] After Lee's first term expired, he was nominated by the People First Party to join the National Communications Commission.

[12] In 2015, Chen Yi-chieh, Kao Chin Su-mei, Hsu Hsin-ying, and Lee founded a new legislative caucus named the New Alliance.

"[15] After the Codex Alimentarius Commission voted to permit trace amounts of ractopamine in beef, Lee suggested that the government adopt the international standard and propose legislative amendments to allow the United States to export beef to Taiwan.