Time to stop listening to the bullshit Republicans have been spewing to keep you in a state of outrage, and learn the facts.
For as long as you have a tourist industry, H1N1 visa workers, student visas, international business, and an immigration program, your borders have never been closed, and never will be. Unless no American can leave the country for any reason, and no one can come in for ANY reason, your borders are not, and will never be, "closed".
Trump didn't "close" the Southern Border. He just closed it to legal entry. The only reason illegal crossings stopped in 2020 was covid. Nothing to do with Trump's policies. Nobody was trying to get into the plague capital of the world in 2020.
Trump's border policies drove refugees directly into the arms of the coyotes and the smugglers, since they only way refugees could stand on US soil to legally claim asylum was to cross illegally - which is permitted under your refugee and asylum laws. How do you see how destructive his policies truly were?