Title 42 allows federal agents to turn away illegal aliens immediately without taking them into custody if the agent believes the alien might have Covid-19. Even though the number of illegal crossings is at an all-time high, the numbers at the border would be up to double their current levels without that policy in place.
With President Joe Biden’s clear support, Homeland Security Secretary Alejandro Mayorkas has called for an end to the border control policy, but the Biden administration has not gone through the legal process to end the CDC measure.