Published: Oct. 8, 2020 at 1:46 a.m. ET By Andrew Keshner The Internal Revenue Service still has to process an estimated 2.5 million hard copy income tax returns within a pile of unopened mail that stands at 5.3 million pieces. That’s according to IRS Commissioner Charles Rettig, who testified Wednesday on the agency’s efforts to dig out from a mountain of unopened mail that accumulated […]