Diane Lee

In February 2010, Lee was found guilty in the Taipei District Court of fraud and forgery relating to the citizenship issue. She appealed the sentence to the Taiwan High Court, which acquitted her in August 2010. Her case went to the Supreme Court of the Republic of China, which upheld her acquittal.

On 16 January 2009, the American Institute in Taiwan issued a letter to clarify that under United States nationality law, a person may lose U.S. citizenship by committing certain acts with the intention of losing U.S. citizenship, as long as the person's conduct after the said act is consistent with that of a non-U.S. citizen. Lee's lawyer Lee Yung-jan argued that this supported Lee's earlier statement that she had automatically lost U.S. citizenship upon taking office, and that her subsequent conduct such as travelling to the U.S. on a Republic of China passport instead of a United States passport confirmed her intention to lose citizenship. However, the Central Election Commission revoked Lee's status as an elected official in February 2009. The CEC allowed Lee to keep over NT$8.6 million in election subsidies because the Election and Recall Act for Public Servants did not preclude natural-born dual citizens from running in local elections. Foreign citizenship must only be renounced before the oath of office is administered. Her name appeared in the Internal Revenue Service's Quarterly Publication of Individuals Who Have Chosen to Expatriate in the final quarter of 2009.

In May 2008, opposition Democratic Progressive Party politicians accused Lee of holding United States citizenship while sitting in the Legislative Yuan after winning the 2008 Republic of China legislative election on 12 January 2008, in contravention of nationality and election laws. This sparked Taiwan's authorities to inquire with the United States Department of State regarding Lee's nationality status. Lee maintained that she had lost U.S. citizenship automatically upon being sworn in as a Taipei City Councilwoman in 1994. The U.S. Department of State issued a letter to the Ministry of Foreign Affairs in late December 2008 stating that Lee had been previously determined to be a U.S. citizen and issued with a passport and that no request for determination of loss of nationality had been made, but that a determination could be made on presentation of further evidence that an act causing loss of nationality had been performed. A finding of loss of nationality would be retroactive to the date of the aforesaid act. However, amidst rising controversy, Lee resigned in January 2009.

On 28 March 2001, Lee was assaulted by notorious organised criminal and legislator Lo Fu-chu during a meeting of the Legislative Yuan's Education and Culture Committee, after she implied that he had attempted to interfere with the selection of board members for a public educational institution that was experiencing a corruption scandal and called him a "gangster". Lo originally denied that he had assaulted Lee, until a video of the incident (which Lo did not know existed) was shown on Taiwanese television. Lee was hospitalised following the incident with a slight concussion. The resulting scandal virtually ended Lo's political career. She charged him with assault, but later forgave Lo and reached a settlement.

Diane Lee (Chinese: 李慶安 ; born 17 January 1959) is a Taiwanese former politician. She naturalised as a U.S. citizen in 1991, but later relinquished U.S. citizenship. Lee, a Kuomintang member, held elected public office in Taiwan from 1994 to 2009, first as a Taipei City Councilwoman and then for three terms as a legislator representing Daan District, Taipei City.