How long does it take from the time when the US Immigration Bureau sends an email informing that the information is being processed to the interview?

The waiting time for American citizens' minor children to immigrate is about 3 months.

There are two situations in which children of American citizens apply for immigration:

1. The first case is that the child is already in the United States. In this case, American citizens can submit immigration applications (Form I- 130), and children can also submit applications for status adjustment (Form I-485).

2. The second situation is that the child is outside the United States. In this case, American citizens need to submit an immigration application and ask the immigration bureau to inform the American consulate in the country where their children are located. Once the immigration application is approved, the National Visa Center in the State Council will send a form and information package (Package 3) to American citizens. After completing the form, children can apply for immigrant visas at American overseas consulates. He became a permanent resident of the United States on the day he entered the United States with an immigrant visa.