U.S. Faces Growing Exodus of Biomedical Scientists as Funding Uncertainty and Visa Costs Erode Research Talent
核心洞察
An NBER survey of 916 early-career biomedical scientists found the share likely to remain in the United States fell 21 percentage points, from 93% to 72%, between late 2024 and March 2025.
The decline was steepest among foreign scientists (30.8 percentage points), with European researchers showing the largest drop, followed by those from India and Latin America.
A Nature poll of over 1,600 researchers found three-quarters were considering leaving the U.S., while a STAT survey reported 13% of NIH-supported labs had lost researchers to other countries.
The United States' long-standing ability to attract and retain the world's leading scientists is showing signs of erosion, as federal funding uncertainty and rising immigration costs drive a measurable decline in researchers' intentions to build their careers in the country. A National Bureau of Economic Research (搜索) (NBER) survey of 916 young biomedical scientists, conducted shortly after changes to federal science funding began in early 2025, found a 21 percentage point decrease in the share of early-career biomedical scientists who said they were likely to remain in the United States.
The NBER findings reveal a sharp reversal in career expectations. When asked to recall their views six months earlier, 93 percent of respondents reported that they were likely or very likely to remain in the United States. By March 2025, that figure had fallen to just 72 percent. The decline was most pronounced among foreign scientists, whose reported likelihood of remaining dropped by 30.8 percentage points, suggesting many were considering research opportunities elsewhere. Among U.S. scientists, the decline was smaller at 15.8 percentage points, yet roughly one in six domestic researchers who previously planned to build their careers in the United States expressed a willingness to pursue a career abroad. Among international respondents, European scientists showed the largest decline in their intention to remain, followed by scientists from India and Latin America.
These findings align with broader evidence of dissatisfaction across the research community. A Nature poll answered by over 1,600 researchers in early 2025 found that three-quarters of respondents—more than 1,200 scientists—were considering leaving the United States because of concerns over research funding and the future direction of science policy. Additionally, a nationwide STAT survey of nearly 1,000 researchers supported by the National Institutes of Health found that 13 percent of respondents said their lab had lost researchers to institutions in other countries as a result of federal funding disruptions in the past year. Together, these surveys indicate that declining interest in remaining in the United States reflects a broader shift in how scientists view the country's research environment, rather than a phenomenon limited to a single discipline.
Policy Changes Driving Uncertainty
Two concurrent policy shifts have made the United States a less attractive place for scientists to build their careers. Most recently, the Office of Management and Budget (搜索) (OMB) proposed a new rule that would give "senior appointees" at federal science agencies greater authority to choose which research grants receive funding, rather than relying primarily on the long-standing practice of peer review by experts in the relevant scientific fields. The proposal drew more than 340,000 public comments, with an analysis of nearly 168,000 of those comments finding that 96 percent opposed the rule. ITIF and Nobel laureates were among those arguing that the proposal is misguided and that political considerations should not replace scientific merit in determining research funding.
At the same time, federal funding reductions at major science agencies have eroded confidence in the U.S. research environment by limiting grant opportunities and increasing uncertainty about long-term research careers. Immigration policy has compounded the problem. Last year, President Trump issued a proclamation imposing a $100,000 fee on certain new H-1B visa applications. A federal judge struck down that fee this June, but DHS subsequently proposed a new $103,265 fee for all cap-subject H-1B petitions. While the original proclamation applied to new hires by universities, hospitals, and research-based institutions, DHS's new proposed rule would generally exempt those employers from the fee.
Global Competition Intensifies
The growing loss of scientific talent is especially concerning because other countries are actively recruiting the very researchers the United States risks losing. Canada launched a C$1.7 billion initiative to attract foreign scientists while also encouraging Canadian researchers working abroad to return home. Europe is pursuing a similar strategy: in May 2025, the European Commission announced a €500 million initiative aimed at making Europe a global "magnet for researchers." In January 2026, France launched its €100 million Choose France for Science program to enable top-level researchers to "work in France under optimal conditions."
China has also intensified its efforts to recruit global scientific talent, introducing a new "K visa" to make it easier for young foreign science and technology talent to relocate to China for education, research, and employment. The stakes are significant: China already leads the world in output across 7 of 10 advanced industries—computers and electronics, chemicals, machinery and equipment, basic metals, motor vehicles, fabricated metals, and electrical equipment—and attracting additional scientific talent would likely accelerate that progress. Conversely, if the United States loses researchers while its competitors gain them, America's innovation capacity and technological leadership will gradually erode.
Policy Recommendations
To maintain its position as the world's leading destination for scientific research, policymakers should strengthen the environment for scientific discovery. Congress and the administration should provide stable, predictable funding for federal research agencies so scientists can pursue long-term research careers in the United States with confidence. The federal government should also preserve merit-based peer review as the primary mechanism for allocating scientific research grants, ensuring that funding decisions are guided by scientific excellence rather than political considerations.
Finally, policymakers should modernize high-skill immigration policy by reducing unnecessary barriers and uncertainty that discourage talented scientists from building their careers in the United States. This includes making it easier for skilled H-1B visa holders to change employers, addressing employment-based green-card caps, and providing greater certainty so that immigrants and their families can make long-term plans. Policymakers should also reduce barriers facing spouses and children, including restrictions that can prevent spouses from working and make it more difficult for families to establish stable lives in the United States.
