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USCIS historical data correction

Correction effective and independently verified: .

Historical rows were deterministically reconstructed from 1,537 daily source snapshots. This release corrects 37,805 historical rows: 37,802 with corrected case-inquiry dates, 37 of which also had their normalized processing-time range corrected, plus 3 with corrected range-unit labels only. Current USCIS values are unchanged across 495 source rows.

37
range rows
37,802
case-inquiry dates
495
current rows unchanged

Correction files

External mirror status

2 of 7 external repositories have independently verified corrected versions. All 7 legacy versions remain available for reproducibility; the remaining 5 repositories do not yet have independently verified public corrected versions.

PlatformIdentifierStatus
Zenodo10.5281/zenodo.21311840corrected v2 independently verified; legacy v1 10.5281/zenodo.19529862 retained
Harvard Dataverse10.7910/DVN/NBV9M5 v2.0corrected v2.0 independently verified; legacy v1.0 retained
Kagglepriyasharmaimmt/uscis-immigration-processing-times v1legacy v1 retained; corrected version pending separate authorization
figshare10.6084/m9.figshare.31999779.v1legacy v1 retained; corrected version pending separate authorization
Hugging Facepriyasharma-it/uscis-immigration-processing-timeslegacy main identified; corrected commit/tag pending separate authorization
openICPSR10.3886/E248399V1legacy V1 retained; corrected version pending separate authorization
Mendeley Data10.17632/krzjyk8hfx.1legacy v1 retained; corrected version pending separate authorization

Source: USCIS processing-time snapshots. Semantic contract: uscis-history-state/v1.