Another very concrete example, during the Trump administration, USCIS revoked it's long standing policy of giving deference to previously approved H-1B petition

Another very concrete example, during the Trump administration, USCIS revoked it's long standing policy of giving deference to previously approved H-1B petitions when adjudicating extension petitions with the same employer. This was a significant reason for the above-referenced explosion in RFEs. Soon after Biden took office, USCIS reinstated the policy and RFEs dropped significantly.