my wife had to abondon permanenet residence from USA due to illness of sister in germany so we turned in green card with form I407 and received from uscis confirmation. we want to return APRIL-MAY OF 2025 will we have to start from front and will we have to start with immigrant visa thru frankfurt and will we have problems stateside entry. I am reitired Army and my wife has lived in USA over 25 years and we have kids, grandkids, great grandkids and family in Pennsylvania. What steps should i take?