On Day 1 – January 20th, 2021, immediately after inauguration, President Biden halted construction of the border wall, immediately ending tens of thousands of jobs.
Freezing all deportations
https://www.cbsnews.com/news/deportation-moratorium-ice/
https://nypost.com/2021/01/22/texas-sues-to-block-joe-bidens-deportation-freeze/
Reinstituting DACA, prevent “dreamers” from deportation
Including illegal aliens in US census
https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/20/executive-order-ensuring-a-lawful-and-accurate-enumeration-and-apportionment-pursuant-to-decennial-census/
Reversing ban on travel from countries who are state sponsors of terrorism and/or unable to vet travelers (falsely referred to as Muslim ban)
https://www.cnn.com/2021/01/20/politics/immigration-daca-border-wall-biden-agenda/index.html