In response to a recent uptick in migrant apprehensions at the U.S.-Mexico border, President Donald Trump threatened to close the port of entry in his latest crackdown on immigration. On March 30, Trump tweeted that the next step is to close the border should Mexico fail to stop migrants from entering the U.S.

On April 1, former Homeland Security Secretary Kirstjen Nielson authorized U.S. Customs and Border Protection (CBP) to re-deploy officers at the southern border to assist with managing the recent mass arrival of Central American immigrants. According to American Shipper, CBP plans to dedicate up to 750 officers from its Office of Field Operations to provide emergency immigration assistance along the southern border. On April 7, Kirstjen Nielson offered her resignation to President Trump.