 The debate starts at 9 p.m. There will be no audience and the microphones will be cut off depending on whose turn it is to speak. Jessica Rosenthal, Fox News. Securing America. Several weeks after President Biden took executive action to limit illegal migrant crossings at the southern border, Homeland Security Secretary Alejandro Mayorkas says the measures are having a positive effect. Across the entire southern border, border patrol encounters have dropped by over 40 percent.