But of course I'm going to nitpick you; your numbers are wayyyy off.
The entire population of undocumented people in the US is estimated to be between 14.2 million to 15.8 million, an increase from around 11 million in 2021.
So, no, twenty million undocumented people did not enter the US during the Biden Era. There aren't even 20 million total undocumented people in the US.
Where'd you get those numbers?
Rest of your post; sure, it's possible, but honestly I could see it more likely being an unaffiliated/amateur pro-Palestine/anti-Israel group committing the next major terrorist attack than something from one of the "big boys".
I was using that number because thats the number the current administration has been using.
I probably should have been suspected that number may have been a wee bit exaggerated...
Different immigration groups, using different methodologies, estimate that the population here illegally ranges from 10.9 million to 16.8 million.
www.poynter.org
That being said, how accurate are the numbers from either side?
While the Trump administration seems to have inflated the number of illegal migrants who entered the US during the previous administration, I find it equally likely that the Biden administration underreported the numbers that were really coming in.
You said those numbers were as of 2021 - and I have no reason to doubt their relative accuracy. But Trump was sworn in as POTUS in January of 2025 - after the 4 years of the Biden administration's open border policy...
And
THAT is the
very relative number I'm going off of
...
Even if we slash that suggested number of 20 million by 50% - that's still
10 million people who entered illegally, who came from all over the world.
It drops that 1% from 200,000 possible terrorists down to 100,000 possible terrorists. (I mean sure, I guess that is dramatically better news...but...like...)
...
Remember, it only takes 1 person to commit an act of terror - and they can even be homegrown.
(Thats why I ignore this particular aspect of the numbers game, and think more broadly & relatively. Because with numbers this big, in this context, I don't think anybody really knows...including the US. And that kinda goes to support my point.)