Homeland Security Secretary Alejandro Mayorkas on Sunday rebuked Republican claims that the border can be managed solely through President Joe Biden's executive action, even while the White House weighs some of those actions behind closed doors. "We consider options at all times," Mayorkas said on CNN's "State of the Union." "But administrative action is no substitute for an enduring solution." Officials told NBC News in February that Biden is thinking about implementing harsher asylum standards without Congress. The rules would raise the bar for asylum-seekers and deport any migrants who do not meet those elevated standards. Tightening asylum grants is jus