In what it called a “major policy change,” the Internal Revenue Service said Monday that its agents will largely stop making unannounced visits to taxpayers’ homes, reversing a decades-long practice that had revenue officers turn up unexpectedly to collect unpaid taxes and unfiled tax returns. The change is part of a larger strategic operating plan meant to transform the agency using funding from last year’s Inflation Reduction Act. The agency last week announced improved metrics for taxpayer se