Biden could deal with this issue today if he wants. He has the executive power to do so, but hasn't done anything other then wring his hands and have the press secretary whine about how he's powerless to do anything.
A funny if it wasn’t so sad example of this you can look up is the migrant caravan storyline. I recall just before at least three election cycles the “migrant caravan coming for your jobs trekking from Central America” plays nonstop on right wing news channels, and then totally disappears post election, only to appear again as if by magic just before the next election. Doing a quick search it looks like the largest migrant caravan ever has been making its way to the US since 2018.
Note: despite my conspiracy-like talk, I do believe the migrant waves existed.
But they were multiple different migrant waves, with different root causes. Venezuela has been a disaster for the last decade but things have really taken a turn for the worse in recent years. Honduras had the 2017 Election issue (and is why during Trump's time, a lot of migrants were coming in from there). Etc. etc.
We need to treat the migrant waves as *people*, each with different sets of problems and root causes. In many cases, different migrant waves speak completely different languages (fortunately most of Central/South America are Spanish and Portuguese... but there's a lot of Native American migrants who have unique languages causing issues)
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Its clear that its just a political football though. Its just a talking point, without anyone actually seriously considering the actual problem or the nature of it. I think that's what frustrates me the most.