House Committee on Foreign Affairs Chair Michael McCaul said Sunday he will continue to pursue contempt charges against Secretary of State Antony Blinken for his failure to turn over a document connected with the withdrawal of U.S. personnel and troops from Afghanistan in 2021.

“This would be the first time a secretary of state has ever been held in contempt by Congress and it’s criminal contempt, so I don’t take it lightly,” the Texas Republican told ABC “This Week” co-anchor Jonathan Karl.

The committee in March issued a subpoena for the document, an internal, confidential State Department “dissent cable” that had been written by 23 department employees in Kabul, Afghanistan, reports The Wall Street Journal.