WHAT CAN THEY DO?
The Biden administration can concentrate their efforts on improving LEGAL immigration under the present law.
Mainly, this requires to speed up processing. Actually, to return processing to the schedules it had before the Trump era:
Eliminate the huge backlogs in consular processing. Schedule more interviews, issue more immigrant visas to those eligible.
Speed up USCIS PETITION processing. A petition to remove condition from residency (Form I-751) should not take 2 – 3 years. A family-based immigrant petition (Form I-130) should not take 1 – 2 years.
Process Labor Certification by U.S. Department of Labor, all done electronically, in three (3) months.
Issue employment authorizations (Form I-765) in 2 months.
Produce and mail Green Cards and Social Security numbers for people who arrive with IMMIGRANT VISAS in 30 days.