So I got a notice from the IRS saying I was going to be audited and I need to submit any documents, supporting my filing status and my dependents. for the last three years, I’ve been claiming my nephews as my my dependence and never had any issue I’m supposed to submit any documents that prove were related. Birth certificate are not an option for me tho because they are my stepbrother’s sons and the boys have their mother‘s last name so none of our last names match…. does anybody have any idea what else I could submit to the irs