Tax season wore on. A blizzard in the Northeast slowed things down there, but fil-ings were already behind last year's figures by almost 6 million returns, suggesting a bus-ier-than-usual end of the season lies ahead. The Internal Revenue Service continued to face challenges with identity theft and tax-payer service, although there have been some improvements since last year, according to testimony by an IRS deputy commissioner, and two separate government reports.
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