So you did not file your income tax returns for at least ten years, and here you come back into the country finding out that the IRS had been contacting you through your old good address but to no avail. Until such time that they find out of your quiet return to the country, they will automatically send for you to pay your dues for those ten years of being unable to file your income tax returns.
So what you need to do is to get your documents ready and be ready as well to hear the shock of your life. The tax you owe them may be really high enough to let your eyes roll. But you’ve got no choice. It is either you pay your dues or you get convicted. Which choice would you then go for?