Who is the American politician who served in the United States House of Representatives from 1997 to 2017, that also ran in 2006 against Tan D. Nguyen? 
Tan D. Nguyen: Tan Duc Nguyen (born 1973) was a two-time candidate for the U.S. House of Representatives in California. Tan D. Nguyen:  In 2006, he ran as a Republican against incumbent Democrat Loretta Sanchez in California's 47th congressional district.
i don't know