I'll give you some concrete examples:

- During the Trump administration, the number of RFEs (request for evidence, often step 1 of denying a petition) for H-1B petitions increased significantly. I'm reading that 40% of H1Bs were RFEd in fiscal year 2019 under Trump, versus 16% under Biden in 2021 [1]. I was personally affected by this: both of my H-1B petitions were RFE'd under Trump (I have a math PhD from a top 20 American university and am working in software). These RFEs are incredibly stressful, time consuming and costly for companies.

- During the Trump administration, USCIS started requiring almost all employment-based green card applicants to attend an interview. This significantly slows down the green card application process because USCIS is bottlenecked on officers to perform interviews. Biden reverted this change.

- During FY2022, due to the dynamics of US immigration law, nearly double the number of employment-based green cards were available than usual (265k versus 140k normally). Under Biden USCIS basically had a task force actively dedicated to ensuring all of these green cards were used [2]. I think we can pretty sure that under Trump, USCIS would have had a business-as-usual attitude, not deployed any special measures, and would only have issued around the regular quota of visas.

[1] https://resources.envoyglobal.com/global-immigration-compass.... [2] https://www.uscis.gov/archive/fiscal-year-2022-employment-ba...

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.

Donny was also very petty. He would reject forms that had blank fields instead of N/A or reject forms that were signed with Apple pencil instead of wet ink. Stuff like that.