Recently, there was an ICE raid on students enrolled in University of Farmington, Michigan. I was temporarily enrolled for a year and half there (Feb 2017 - Nov 2018). I left USA on my own volition in May of 2018. The univ eventually terminated my SEVIS for non-payment in Nov 2018. I'm looking to apply for a tourist visa to USA. What potential issues might arise?

My parents are getting ready to file their N400 naturalization application online soon. Here is their situation :
They got their Green Card ( I sponsored them) in April 2013. They have made four trips to India , two of which were less than 32 days. However one trip in 2013-2014 was for 204 days but this trip is outside of the 5year look-back period now. They took another trip in in August 2014 ,returning in March 2015 for a total of 193 days outside. They had to stay back longer due an unexpected health issue when my mom had to undergo surgery. They have paid filed their tax returns as a resident for every year since getting their GC even-though they do not owe any taxes - they do have some passive income in India. They do live with me and while they have bank account there are not many transactions in it. Also they have medical coverage through ACA where they get premium assistance. Would 5 years of tax returns along with medical documents that show my Mom's diagnosis and surgery followed by physiotherapy be sufficient to overcome the presumption of abandonment of residence in US because they stayed about 13 days more than 180 during their trip in 2014-2015 ?

I had an approved i140 from employer A for over a year. And my wife has her H4 and EAD approved recently (employer A).
In between, I switched to a new employer B and they have filed her H4 and EAD together with my H1b application. Currently her H4 & EAD is pending from employer B, but my H1b from employer B is approved. my i140 with employer B is not started yet but previous employer i140 was approved for more than 180 days. In this scneario, can the H4EAD approved with my previous employer A's i140 can still be used/valid?