President-elect Donald J. Trump’s advisers have spent months trying to identify a disease that will help them build their case for closing the border.

Donald Trump reportedly intends to seal off the US-Mexican border by invoking a public health emergency. The president-elect’s advisers have spent months searching for a disease that will allow them to justify closing the border using emergency health powers, The New York Times reports.

President-elect Donald Trump’s transition team is reportedly planning to reimplement Title 42, a border restriction used to block migrants from entering the United States due to public health concerns—but are still searching for the right disease to justify the policy.

President-elect Donald Trump's team is searching for a disease that they can use to declare a public health emergency to seal the border, reported The New York Times on Thursday. Specifically, Trump wants an excuse to invoke Section 265 of Title 42,