I received a refusal on our interview for F4 VISA (All support docs were proper) in 2017 because when I filled the DS 260 in 2017 for immigrant visa i did not disclose my prior "arrest"which was being arrested in 1986 for having small amount of marijuana on me because it so many years ago and when I did my police clearance it did not come up and all was clear. So the consular refused my visa because when I did my DS 160 for non immigrant visa i also did not disclose my arrest in 1986 because I did not think it would be a big thing and it was so many years ago and I no longer do marijuana or any illegal substance.
So after that they refused by f4 visa and also canceled my multiple visitor visa.
Then in Jan we filled and filed the Form I 601 in Phoenix based on the fact that main reason we're immigrating is took after our parents in the states as they are very sick from time to time.
So far its been 140days ans they said to wait 180 days to allow to process the I 601.
What are my chances like? As all our supporting documents were good only thing I didnt disclose my ONLY arrest in 1986 because i figured it wouldn't be a big deal but they refused under section 212 a 2 a 2 for controlled substance violation in 1986 section 212 a 6 c I for Misresprestation of a material fact in my 2008 non immigrant visa which i stated i was never arrested or convicted.