The top Customs and Border Protection official is refusing a request for his resignation from the Homeland Security chief, The New York Times reports. CBP commissioner Chris Magnus has come under fire after an increase in crossings at the country’s southern border, with some Republicans signaling their intent to impeach Magnus if they retake the House of Representatives. Homeland Security Secretary Alejandro Mayorkas reportedly asked Magnus to resign or otherwise be fired. In an email to staff, Magnus stated that he planned to come to work on Monday. “I have no plans to resign as C.B.P. commissioner,” he wrote. He added that the department had revoked his access to its Twitter account.