How long does it take for minor children to apply for a green card in the United States?

Judging from the current immigration policy, it is quite suitable for you to apply for your daughter. You can ask your American husband to be your deputy guarantor, which will be more secure.

It doesn't take three years. If you applied last month, it would be faster. Because there is no timetable, the application will be faster now. If you say your daughter is unmarried and underage.

There may also be a document involved, because you remarried, and the custody judgment of your daughter when you divorced. This is for your daughter's custody judgment.