Visa Type For Parents

Summary

For a temporary visit, apply for a B-2 visa for your parents. Indicate yourself as the person paying for the trip if you are covering their expenses. This can help demonstrate their ties to their home country.

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Temporarily
For temporary visits, you should apply for a B-* visa for your parents. This is a non-immigrant visa for persons desiring to enter the U.S. temporarily for pleasure or medical treatment.
Who should I put person paying for the trip
You should indicate yourself as the person paying for the trip if you are covering their expenses. This can help in demonstrating their ties to their home country.