Tien won three straight elections on the Democratic Progressive Party party-list proportional representation ticket in
2004,
2008, and
2012. She was named deputy minister of the
Overseas Community Affairs Council in 2016, and nominated by the
Tsai Ing-wen presidential administration to the
Control Yuan in March 2017. During her legislative confirmation hearing in January 2018, she expressed conditional agreement to the abolition of the Control Yuan. Tien's nomination, alongside ten others, was approved by the
Legislative Yuan, as the Democratic Progressive Party held a majority. Tien was renominated to the Control Yuan in June 2020. ==References==