You can federalize the National Guard and you can mobilize everything in the Executive Branch. That will help, but it won't solve everything. There are tens of millions here that have invaded, and many of them are bad guys - you will need a joint DoD/DHS effort to find them and deport them. There's no telling how many hostile actors Mayorkas and Biden have ushered into the nation.

The way to do it is to allocate $300 per head for bus companies like Greyhound, to transport people to a holding area at the border. There's a pretty big swath in New Mexico that is well suited for this, also some land east of El Paso.

Incentivize self-deportation by cutting off all the aid and offering cash if people self-deport. They get on a bus, for free, get a ride, get cash, go back across. And you play dirty, dirty games with Mexico if they won't cooperate. Counterfeit their currency and give people tons of Mexican currency if you have to, to further incentivize this. There's no need to invade Mexico militarily, but there's also no need to play nice with a government that has aided in the invasion of our nation.

You also start prosecuting those that give sanctuary, that employ invaders, that serve as a magnet for the invasion. It's legit subversion of US law and sovereignty.

When benefits are cut off and people don't want to employ the invasion force for fear of going to prison, and there's cash to go back home, people will go on their own.

You can also incentivize the growth of economic sectors in Mexico so the magnetic pull goes in the opposite direction.

When the cartels try to take over the farms, the factories etc, the people will eradicate the cartels for you, as that will be the key to their prosperity.

Mexico should be a supreme destination for tourism and agriculture etc. A flood of people back across, suitably motivated, would take care of the cartels in less than a year.

Lock down the border so no one comes in. Incentivize self-deportation. Those are the two most important elements.