By Jeanne Batalova, Andriy Shymonyak, and Michelle Mittelstadt

  Although international migrants account for just 3.5 percent of the world’s population, their number—almost 272 million people as of 2019—is far from insubstantial. Current and historical research shows that immigration brings significant and long-lasting benefits to countries of destination and origin and to migrants and their families alike. But it also shows that immigration often comes with tremendous challenges for individuals, communities, and institutions. In the United States, a country with a long and complex immigration history, public and political debates that started well back into the 18th century about the size and type of immigration, as well as its socioeconomic impacts, show no sign of abating. And as other countries around the world become migrant-sending, receiving, or transit places (or frequently a combination), migration—whether voluntary or forced—has arguably earned a prime and enduring spot on national and international policy agendas. It also continues to capture significant public and media attention. What is often missing from these conversations is accurate, complete data about who these immigrants are, why they come and leave, and what places they occupy in the socioeconomic hierarchies of their sending and destination countries. In this edition, Immigration Data Matters, which updates an earlier Population Reference Bureau - Migration Policy Institute guide, we have significantly expanded a list of online resources that provide authoritative migration-related data and statistics to help inform understanding of this phenomenon in the United States and globally. As before, our main guiding principle is to offer data from population censuses and surveys, administrative datasets, and new analyses that can help our audience understand the size of immigrant populations and inflows and outflows, enforcement actions, public opinion, historical trends, citizenship acquisition, and many other aspects. Here we list and describe more than 250 data resources, half U.S., half international. These resources are collected or compiled by a wide range of sources, including government statistical agencies, international organizations such as the World Bank and United Nations High Commissioner for Refugees, and reputable research organizations. We use these resources in our own research, and while the list is by no means exhaustive, our goal is to share the most accurate, relevant, publicly available migration-related data, in one user-friendly and accessible guide. We hope this guide helps bring more knowledge to an issue area where the facts are often missing  

Migration Policy Institute and The   Population Reference Bureau , 2020. 49p.

By David Bruce

The South African per-capita murder rate has steadily escalated since 2011/12, when it was at its lowest since 1994. The 2022/23 rate of 45 per 100 000 is the highest in 20 years. But focusing on national murder trends is misleading as trends vary greatly across the nine provinces. The current high per-capita murder rate is driven by high rates in the Eastern Cape, KwaZulu-Natal, the Western Cape and Gauteng. Key findings: South African murder trends vary considerably across provinces. The Eastern Cape, KwaZulu-Natal, the Western Cape and Gauteng have the highest per-capita murder rates. In 2022/23, the Eastern Cape had the highest murder rate (71 per 100 000), followed by KwaZulu-Natal and the Western Cape, both with annual murder rates of 56. The four provinces with the most murders have also recorded the highest per-capita murder rate increases in the last 10 years. Since 2011/12, rates have increased most dramatically in KwaZulu-Natal and the Eastern Cape. The increase has been greatest from 2017/18 to 2022/23. The per-capita murder rate in the Western Cape decreased over the last five years. Recommendations The government and society must prioritise reducing murder rates, which are high and increasing. The collection of data about murder, and the analysis thereof, must be improved. ‘One-size-fits-all’ approaches to addressing murder are unlikely to be effective. Responses should be adapted to respond to the drivers of murder focusing on high-murder localities. Priority should be given to understanding and addressing murder in the four provinces with the highest per-capita murder rates. KwaZulu-Natal and, to a lesser degree, Gauteng experienced major surges in murder in 2021/22, with increases continuing in 2022/23. These have taken them well above their rates in the year before the COVID-19 pandemic and national lockdown. Deaths during the July 2021 unrest were not a major contributor to the increases in murder in KwaZulu-Natal and Gauteng in 2021/22. Many experts believe that the entrenchment and growth of organised crime has played a major role in the increasing number of murders. More in-depth provincially focused research and analysis is required to better understand the factors and circumstances driving murder trends. 

Pretoria, South Africa: Institute for Security Studies, 2023. 12p.

By Bryce Pardo, Jirka Taylor, Jonathan P. Caulkins, Beau Kilmer, Peter Reuter, Bradley D. Stein 

  The U.S. opioid crisis worsened dramatically with the arrival of synthetic opioids, such as fentanyl, which are now responsible for tens of thousands of deaths annually. This crisis is far-reaching and even with prompt, targeted responses, many of the problems will persist for decades to come. RAND Corporation researchers have completed numerous opioid-related projects and have more underway for such clients and grantors as the Agency for Healthcare Research and Quality, the Assistant Secretary of Health and Human Services for Planning and Evaluation, the National Institute on Drug Abuse, the White House Office of National Drug Control Policy, and Pew Charitable Trusts. Researchers have advanced an understanding of the dimensions of the problem, some of the causes and consequences, and the effectiveness of different responses. However, no one has yet addressed the full scope of the problems associated with opioid use disorder and overdose deaths. Beginning in late 2018, the RAND Corporation initiated a comprehensive effort to understand the problem and responses to help reverse the tide of the opioid crisis. The project involves dozens of RAND experts in a variety of areas, including drug policy, substance use treatment, health care, public health, criminal justice, child welfare and other social services, education, and employment. In this work, we intend to describe the entire opioid ecosystem, identifying the components of the system and how they interact; establish concepts of success and metrics to gauge progress; and construct a simulation model of large parts of the ecosystem to permit an evaluation of the full effects  of policy responses. We dedicated project resources and communications expertise to ensure that our products and dissemination activities are optimized for reaching our primary intended audiences: policymakers and other critical decision-makers and influencers, including those in the public, private, and nonprofit sectors. The project is ambitious in scope and will not be the last word on the subject, but by tackling the crisis in a comprehensive fashion, it promises to offer a unique and broad perspective in terms of the way the nation understands and responds to this urgent national problem. Ten years ago, few would have predicted that illicitly manufactured synthetic opioids from overseas would sweep through parts of Appalachia, New England, and the Midwest. As drug markets are flooded by fentanyl and other synthetic opioids, policymakers, researchers, and the public are trying to understand what to make of it and how to respond. The synthesis of heroin in the late 19th century displaced morphine and forever changed the opiate landscape, and we might again be standing at the precipice of a new era. Cheap, accessible, and mass-produced synthetic opioids could very well displace heroin, generating important and hard-to-predict consequences. As part of RAND’s project to stem the tide of the opioid crisis, this mixed-methods report offers a systematic assessment of the past, present, and possible futures of fentanyl and other synthetic opioids found in illicit drug markets in the United States. This research is rooted in secondary data analysis, literature and document reviews, international case studies, and key informant interviews. Our goal is to provide local, state, and national decision-makers who are concerned about rising overdose trends with insights that might improve their understanding of and responses to this problem. We also hope to provide new information to other researchers, media sources, and the public, who are contributing to these critical policy discussions  

Santa Monica, CA: RAND, 2019. 265p.

By Kristin M. Tennyson, Charles S. Ray,  Kevin T. Maass  

This report examines the relatively new and emerging problem of fentanyl and fentanyl analogue trafficking. It summarizes the Commission’s related policy work and discusses the continuing policy-making efforts of Congress and the Department of Justice in this area. Finally, the publication presents data about fentanyl and fentanyl analogue offenses since 2005 and provides an in-depth analysis of fiscal year 2019 fentanyl and fentanyl analogue offenses and offenders.

Washington, DC; United States Sentencing Commission, 2021. 60p.