Some Republicans tend to blame problems related to immigration on Biden. I think the problem is beyond our country's politics. It's the world topic of "migration and population."
It's also the world problem of authoritarian governments, crime, gangs and poverty. An overwhelming number of people would love to come to USA; regardless of our politics, as long as USA is a better place to live than where they are from.
Lots of folks come in via our airports, not all from our land borders. Students over saying visas and so forth. It's a worldwide situation.
To try and stop it, at the national level, would likely require us to close our country and drive ourselves into poverty. Seal up our borders, restrict our airports, cut back on trade, tourism, education and things like agriculture that need labor. If we drive ourselves into poverty, less people would want to live here.
On a related thought, the world has a shortage of good places to live. Sure, there's a lot of empty land, but few people live in those spaces for a reason.
Irrigation has increased the amount of good land for agriculture; for instance Yakima County being top agricultural county in Washington State. That due to irrigation.
There is talk of trying to colonize Mars as we are running out of livable space on planet Earth. That idea has its problems; like Mars already being only 1/3 the size of Earth before we even get there.
I got to thinking that developing technology, for living on Mars, might end up being very useful for living on Earth. Indoor agriculture, for instance. It could be useful for living in much of the land we already have, on earth, such as the Sahara Desert or the area called the "Empty Quarter" in Saudi Arabia.
Colonizing those areas, with indoor agricultural technology, would still be easier than colonizing Mars, but the dream of colonizing Mars might be needed for getting us to develop that technology.
Even without climate change, we may need to terrafarm more areas of Earth, that are not now considered that livable, just to support all of Earth's people with our aspirations.
One idea might be to build new states on some big desert area; rather fighting over the tiny space that's now Israel / Palestine.
I tend to think "big picture" pretty much all the time.