To make a long story short, My background investigation done by OPM closed in June 2017 after one year of investigation. Since June 2017, I have been in adjudication. The adjudicating agency is the USCIS. I email them once a month and they always respond with the same answer: your case is with Personnel Security Specialist for final adjudication!
What should I do? I understand that my case might be complicated because most of my family members are not US citizens.