The Trump administration is ramping up efforts to strip more naturalized immigrants of their U.S. citizenship, with The New York Times reporting that officials are seeking 100 to 200 cases per month. The news comes less than two weeks after the Supreme Court agreed to hear a case to decide the constitutionality of President Trump’s executive order aiming to end birthright citizenship.

“During the first Trump administration, they had 25 [denaturalization] cases per year, and … for the 15 years before the first Trump administration, they had fewer than 15 cases per year,” says Mae Ngai, professor of Asian American studies and history at Columbia University. “So this is an incredible escalation.”