"During Trump's first term, the highest number of illegal border crossings occurred in 2019, when 851,508 people were apprehended or found inadmissible at the southern border, according to U.S. Immigration and Customs Enforcement. That number dropped to 400,651 in 2020, when Trump invoked authority under Title 42 to expedite deportations because of public health concerns amid the COVID-19 pandemic."
At the time, that 2019 number was the highest YoY percentile increase in U.S. history. I throw out every statistic related to 2020 because of Covid. Just makes no sense to compare and contrast that year to anything. The point is, the dramatic increase in crossings started under Trump.
I do agree that Pedo-Joe made a mistake in reversing some of Trump's executive orders but, the issue related to the border is far more complicated than those orders and will never correct itself until the root causes of what is driving folks here changes. Until then, we need three-fold more border agents and dramatic improvements in technology.