OMAHA, Neb. (AP) _ It was not an ordinary birthday weekend for Mei-Fen Yeh _ not that 100th birthdays are ever ordinary.

With granddaughter Francis Phang, 16, translating, the native of Hangzhou, China, became a U.S. citizen on Sunday, a day after she turned 100.

That made Yeh the oldest person in Nebraska or Iowa to ever take the oath of citizenship, said Jerry Heinauer, district director of the Bureau of Citizenship and Immigration Services.

It was the culmination of a 10-year project for her family, who helped her learn enough American history and teach her enough English to pass the citizenship test.

Yeh pledged her allegiance to the United States, even saying she will bear arms for her country.

Yeh said she had many reasons for becoming an American citizen, including her affinity for Americans and the weather in the United States. She also said it will make all her traveling back to China a lot easier.