Computer and IT Professionals FAQs

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 ?

If I may verify the processing times involved in NIW. Since it falls under EB2 category, I am assuming it may be a long time before I can get my EAD card and be able to change employers. Also, I want to confirm if there could be issues if I change employers during the process - If so, I'd prefer to change my current employer before starting with it.

My spouse and me are currently working on H1 and we do have our EAD and AP even though we are not using it.
We are planning on a trip to India in the month of December. Both of our H1 visa's on passport have expired. We plan on using AP when coming back to US to avoid the hassle of getting our passports stamped.

We plan on remaining on H1 even though we use AP to get back. We do plan on renewing our AP and EAD when they expire. What I want to know is... is there any advantage of having visa stamped in your passport as to using AP if you plan on remaining on H1? One that I know is cities like London require you to get a transit visa if your visa has expired when traveling to India.