

This took 30 seconds to find
Visa overstays have outnumbered people who enter the country illegally at the Southern border every year since 2007, according to a report by the Center for Migration Studies. The report’s authors estimate that the number of total visa overstays was 600,000 more than the total number of border crossers and that in 2014, visa overstays accounted for two-thirds of all new undocumented immigrants.
This article has the most recent data I could find but if you look at the sources you can probably find better info. You’re welcome to prove me wrong.
The trend has continued steadily since then, and furthermore,
https://www.factcheck.org/2024/02/breaking-down-the-immigration-figures/
This is from 2024, the DHS spokesperson at the time:
The idea Biden opened the borders is thoroughly debunked. Like I said you’re the one telling me a bunch of bullshit so it’s on you to disprove reality, I don’t care enough to spoonfeed you the facts.