Money IRS flagged these tax returns for ID theft and 2.5 million people just didn’t respond August 31, 2023Susan Tompor, USA TODAY NETWORKComments Off on IRS flagged these tax returns for ID theft and 2.5 million people just didn’t respond IRS fraud filters can trigger frustration for real taxpayers — including those ignore IRS letters. National Taxpayer Advocate details the challenges.