The Trump administration has canceled Obamacare health insurance enrollments covering more than 760,000 people, claiming the policies were linked to unauthorized enrollment. The move is part of a crackdown on fraud in the Affordable Care Act Marketplace.The Centers for Medicare & Medicaid Services (CMS) said it canceled approximately 315,000 Marketplace enrollments on August 31, after investigations with insurers confirmed that the enrollments were unauthorized. The agency estimates that it will return about $2.2 billion in federal premium subsidies.The administration is also investigating another 419,000 to 450,000 enrollees to determine whether they meet citizenship or immigration and income requirements. These people have not been found ineligible yet and are undergoing additional verification.Why Is The Trump Administration Canceling These Plans?The authorities says it is targeting fraudulent, unauthorized and improper enrollments, rather than trying to eliminate Obamacare coverage itself.CMS said it found that some people were enrolled without their knowledge, while others had unresolved identity, citizenship or immigration-status information. The agency also found applications missing information such as Social Security numbers.Vice President JD Vance said the canceled group includes “a mix of both phantom people, but also real people who just don’t meet the eligibility requirements,” including some people who he said were enrolled by brokers without their knowledge.CMS Administrator Mehmet Oz said some enrollees were classified as “phantoms” because officials believe they either did not exist or did not know they had coverage.Also read: 6 US Hospitals Will End Gender-Affirming Care For Minors; What The New DOJ Deals Entail760,000 People Affected The administration says the 760,000 people were covered by enrollments that CMS determined were unauthorized. But it does not mean every individual has committed fraud.Some cases involve alleged actions by insurance agents or brokers. CMS says it found applications submitted without required applicant information and evidence that some consumers may have been enrolled without their authorization.CMS has issued notices to 569 agents and brokers that it intends to terminate their agreements over applications that allegedly lacked key information. The agency says 66 had already received termination notices.The administration has identified another group of approximately 419,000 to 450,000 people for additional verification.Officials say they want to establish whether these enrollees are legally eligible for Marketplace coverage and whether they meet the income requirements for the federal subsidies.Also read: Why Is Trump Administration Testing Drinking Water For Abortion Pills? EPA’s Controversial Move ExplainedInsurance Brokers Under Radar CMS says newly registered brokers for the 2026 plan year accounted for a disproportionate share of the fraudulent Obamacare enrollments. According to the agency, enrollments handled by these newer brokers were 2.8 times more likely to have unresolved income-verification issues, 2.7 times more likely to be missing Social Security numbers and 2.6 times more likely to have unresolved citizenship or immigration-status verification issues compared with brokers registered before 2026.CMS has therefore imposed a temporary moratorium on new broker registrations for the 2027 plan year for agents and brokers without an active 2026 Exchange Agreement.The move does not end the Affordable Care Act or eliminate Marketplace insurance. Instead, it represents a major tightening of how the federal government verifies who is enrolled and who qualifies for subsidies.