My son-in-law was interviewed at the US Consulate in Frankfurt in May 2023 for a marriage-based immigrant visa. They have requested his CV with traveling details for further processing. His case has been in Administrative processing for well over 90 days. I have two questions:
1. Is anything can be done to expedite the process?
2. He has traveled to the US on a B1/B2 visa four times prior to his interview from Germany. Is there any problem with him traveling to the USA to visit his wife while his case is in Administrative processing?
Regarding his previous B1/B2 travel history to the U.S., there shouldn't be an issue with further travel while his case is in administrative processing. Although there's a slight possibility of being turned away at the airport, Customs and Border Protection usually treats spouses of U.S. citizens with consideration.
To avoid potential travel hassles, your son-in-law can clear U.S. immigration at Dublin Airport, which offers a more convenient option.