What is the process for applying for an immigrant visa for my parent who is outside the U.S.?

What is the process for applying for an immigrant visa for my parent who is outside the U.S.?

The process to apply for an immigrant visa for your parent who is outside the U.S. is called consular processing. To apply for an immigrant visa for your parent who is outside the U.S., you must be a U.S. citizen over the age of 21. Permanent residents are not eligible to apply for an immigrant visa for a parent. The steps involved in the application process are as follows. 

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