My parents are divorced and want to apply for my mother to immigrate to the United States.

It's faster for you to immigrate first and then apply to your mother.

If your investment immigration goes smoothly (not a pit like EB5), you may become an American citizen in the next 5-6 years.

You can be qualified to apply for your mother, and you can help her complete the immigration formalities in a year or so.

If my mother immigrated first, I won't apply for you until she is naturalized. It will take about 10 years since I applied for you.