One at a time....
If you go back and re-read, I originally asked you why the Biden admin specifically let millions of illegals in (I did overestimate the amount). Given that it was so easy for Trump to stop it, why was it permitted? You went focused on the number I overestimated, then posted something how immigration has always had spikes and drops, or something to that extent. You did not address the question. So I will rephrase - we know the Biden admin reversed the stay in Mexico policy, we know millions were let in when it could have been stopped, and we know from polls that it was one of the main reasons he lost. So given that, why did he permit all the crossings - what was he hoping for.
Since the vaccine was NEVER proven to stop the spread of the virus (Pfizer admitted this), why mandate it? What is the reason for it if it wasn't backed by any science? Why was it added to the vaccines list for newborns, when healthy kids are not at risk, and the side effects are much more risky. Why did they keep schools closed for so long? Why did Mom and Pop stores have to close, but the big retail stores could stay open? Why were gatherings limited to 10 people, but protests could have 100?
They destroyed small businesses, and severely affected the mental state of kids with the closings. NONE of this was backed by science, and the damage done will be felt for a generation at least.
No, I'm talking about all the evidence showing this whole thing was cooked up by Obama, and how the corrupt CIA and FBI were complicit. How a fake Dossier was used for FISA warrants. How Blinkin procured the signatures of 51 experts to create doubt around the Hunter laptop when they already knew it was true.........stuff like that.
Show me something Trump is doing that is worse than the Bragg and James cases, or what Obama/Comey/Clinton and the FBI did during Russiagate. Anything.
Members of Biden's admin, aides, and the liberal media have all admitted he was compromised. This will all be uncovered. You'd have to be a fool to think otherwise, and to even think it remotely compares to Trump.
But I do agree on the age thing, although Trump does not seem to be limited by his at all.
We are here because the Democrats fucked up so badly from 20-24, circumvented their own processes and chose the worst candidate possible besides Biden, and continue to have no cohesion, message, or leadership. All they do is go against everything Trump does.
And their approval ratings show it.
One at a time back at you.

I thought about responding sarcastically by saying 'because he wanted to,' but Presidents do not act autonomously.
However, I understand why some folks blame Biden solely for increased immigration during his Presidency. Afterall, Trump takes all the credit for changing these policies and laws and implementing new stricter ones as if these new laws happen in a vacuum -- they do not. During Biden’s administration construction of the border wall was stopped. The travel bans targeting several Muslim-majority countries were rescinded. And the Trump administration's policy of separating families at the border was ended.
Biden implemented new border security measures which included increased border enforcement. There were efforts to address immigration issues, but comprehensive immigration reform met with major hurdles in Congress.
COVID - vaccines and mandates
Fear of the unknown is a great motivator which often results in overreaction, retrospection easily verifies it. Sometimes emotionally charged and excessive responses are shown to have been warranted, which deems them appropriate. It is "better to be safe than sorry."
Retrospectively, the steps you mention which were taken and imposed in an effort to limit the effects of an unknown virus were excessive. Isn't it great there are still people alive to discuss this issue? I personally knew folks that were not as lucky as you and I are.
Some of us have lived through previous similar situations. The polio epidemic occurred in the 1948 and 1955. In 1952 the polio pandemic peaked. During this period all sorts of restrictions were implemented. It was not until 1955 the original polio vaccine was made available.
The first flu pandemic was in 1830. Since then, there have been multiple flu pandemics. Today, there are new flu variances annually. Since around 1945 flu vaccines have been routinely updated to adapt to these. It was not until 2010 that the CDC started recommending annual flu shots.
HIV hit the scene in 1981. By 2022, there were 33 million estimated deaths. There is currently there are no (FDA)-approved preventive HIV vaccines, although there are recent medications which lessen the chance of contracting HIV. There are several government issued "mandates" in place for HIV.
We were discussing President Biden's possible misdeeds verses Trumps. What does something "cooked up by President Obama," or the other things you mentioned have to do with this?
How about sticking to comparing Trump's and President Biden's wrong doings?
These two paragraphs are irrelevant, IMO.