Here are 2 cases.
1. I was a F-1 student visa holder from 2011-2014. I went back to my home country (2014.7) and re-entered the US in 09/2016 as a J-1 student visa holder. In 2017 tax year, am I still a non-resident since the first 2-year J-1 is considered non-resident. Or am I a resident since I have been in the US for more than 5 years?
2. My wife came to the US in 08/2019 (typo, this should be #08/2017) (she stayed in the US for less than 3 months in 2014). Since she has incomes, should she fill out W-9 or W-8BEN? Thanks!
