Reporter: Texas National Guard soldiers, and National Guard soldiers from other states, are being used to frustrate federal authority. They are being used to get in the way of federal immigration enforcement, and to flout a court order from a federal court. At what point does [Biden] step in and say, 'Enough of that. These are American soldiers. I am federalizing National Guard and ordering them to let the Border Patrol do their jobs because they took an oath to the Constitution, and I am their commander in chief'. When does enough become enough?

Jean-Pierre: I'm not going to speculate on any actions [Biden] could use. It is very clear, and I would remind everyone, that the circumstances under which the federal government could mobilize a state's National Guard are outlined in the law.

Reporter: This appears to be a concerted effort, led by the governor of Texas, and joined by republican governors, encouraged by the republican likely nominee for president who I know you cannot talk about up there, to flout federal authority, to undermine federal authority, and you don't seem willing to say the president will uphold the authority of the federal government.

Jean-Pierre: [Biden] has taken this incredibly seriously. Incredibly seriously. When you have a president for their first legislative action is to deal with immigration and put forth a comprehensive plan to congress…and no action has been taken by congress.