The Trump administration has begun re-evaluating immigration cases approved under President Joe Biden, with U.S. Citizenship and Immigration Services now reviewing individuals who were granted green cards, asylum, and other benefits, according to agency leadership.

USCIS Director Joe Edlow said over the weekend that the agency has significantly ramped up its fraud investigations, focusing in particular on cases processed during the previous administration.

“In terms of the people that are perpetrating fraud: Stop, because we are going to find you,” Edlow said during an interview with One America News, which he later posted on X.

“And even if you’ve already [committed fraud], and you think you’ve gotten away with it, we’re going back,” Edlow said. “As you noted earlier, we are looking at old cases, we are going back and re-vetting cases for people who were granted green cards and granted other benefits during the Biden administration, when there was no vetting. There’s vetting now, and we’re looking at these old cases, so be prepared to face the consequences.”

Edlow had previously told lawmakers in February that investigators were finding high rates of fraud in the cases they reviewed.

“Since January 20, 2025, USCIS officers have made nearly 33,000 fraud referrals to our Fraud Detection and National Security Directorate — a 138% increase compared to the average yearly referrals of the previous administration,” Edlow said.

“Our Fraud Detection and National Security team completed investigations into more than 21,000 cases, identifying fraud in 65% of them,” he revealed. “Our officers conducted over 7,000 site visits and more than 26,000 social media checks to identify national security, public safety, fraud, and anti-American concerns.”

Earlier this year, the agency also launched Operation PARRIS, a targeted effort to reexamine refugee cases in the Minneapolis–St. Paul region, with a particular focus on applicants from Somalia, which officials have identified as a source of widespread immigration fraud.