I got my F-1 visa in 2013. From 2013 to 2017, I was non-resident alien. For 2018, if I stay more then 183 days, I will be identified as a resident alien. Since I haven't stayed for more than 183 days in 2018, I am not identified as a resident alien as of today. I have already got social security tax deducted from paycheck since the beginning of year 2018. Is that how company should withhold FICA?
