@DavidS127 wrote:
Based on your information, you probably became a resident alien for tax purposes for part of the year in 2014 and all of 2015.
Probably not. The OP is an "International Student", which implies a F1 visa. That would mean residency did not happen until 2019, and their last 5 years of tax returns are wrong. They should go to a tax professional that is experienced with Nonresident Aliens to correct the previous tax returns.
