DHS Overestimates Visa Overstays for 2016; Overstay Population Growth Near Zero During the Year
Notice bibliographique
Résumé
For years, noncitizens who fail to abide by the terms of their nonimmigrant (temporary) visas were not widely recognized as major contributors to the US undocumented population. Yet since 2005, the ratio of overstays to illegal entries across the border has increased rapidly as the number of border crossings dropped to 1970s levels. As a result, the inflow of overstays has exceeded border crossers for nearly a decade. These developments highlight the importance of accurate and timely estimates of overstays.In 2017, the US Department of Homeland Security (DHS) released a report, Fiscal Year 2016 Entry/Exit Overstay Report, showing estimates of overstays, by country, for the 50.4 million nonimmigrants admitted in fiscal year 2016 (DHS 2017). At the end of the fiscal year, DHS had not verified the departure of 628,799 nonimmigrants.[1]The Center for Migration Studies (CMS) compared the DHS overstay estimates to CMS’s estimates of the number of undocumented residents that arrived in the past few years. Data were available to make the comparisons for 133 countries; these countries account for 99 percent of all overstays. The major findings include the following:For 90 of the 133 countries, the DHS and CMS estimates differ by less than 2,000, and the correlation between the estimates for those 90 countries is .97, which indicates a very close mutual relationship.The DHS estimates of overstays for Canada are far too high.The DHS estimates greatly exceed the CMS estimates for about 30 countries, half of them participants in the US Visa Waiver Program (VWP).[2]Slightly more than half of the 628,799 reported to be overstays by DHS actually left the country but their departures were not recorded.After adjusting the DHS estimates to take account of unrecorded departures, as well as departures in 2016 of overstays that lived here in 2015, overstay population growth was near zero in 2016.Thus, while overstays account for a large percentage of the newly undocumented, they represent less than half (44 percent) of the overall undocumented population, and they are less likely than illegal border crossers to be long-term residents.The country-specific figures shown here should help DHS focus its efforts on improving the verification of departures of temporary visitors. Finally, these comparisons indicate that the DHS estimates do not provide a sound basis for making decisions about admission to, or continuation in, the VWP. [1] The 628,799 figure refers to nonimmigrants that arrived in 2016 and whose departure had not been verified by the end of 2016. Thus, as demonstrated in this paper, it includes nonimmigrant admissions whose departure was not verified and actual overstays.[2] The US Visa Waiver Program (VWP) is described at https://www.dhs.gov/visa-waiver-program, as follows: “The VWP, which is administered by the Department of Homeland Security (DHS) in consultation with the State Department, permits citizens of 38 countriesto travel to the United States for business or tourism for stays of up to 90 days without a visa. In return, those 38 countries must permit US citizens and nationals to travel to their countries for a similar length of time without a visa for business or tourism purposes.”
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Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,005 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,003 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,001 | 0,002 |
| Science ouverte | 0,000 | 0,002 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,007 | 0,002 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».