Individual, I have not seen any figures but the legislation just
cancelled by Biden may have had an effect, otherwise why cancel it ?
There was one case of a drug cartels underground tunnel from Mexico
to the adjacent US town. Maybe you could rent it by the day.
Who knows ?

The point is known members of Hezbollah etc could enter the US secretly.

Individual,

2000 km of border. Presumably, any terrorists would just go around the ends of it. I wonder if any of them have thought of doing that :)

Once illegals get into the US, they are usually caught near the border, taken to detention centres, documents and either released into the community under conditions, or sent back over the Mexican border.

So yes, the US authorities might have an idea of the nationalities of people who they catch trying to get into the US. But by definition, they would really have no idea - unless they have comprehensive informer networks on both sides of the border - of how many illegals make it, or their nationalities.

Joe

Bazz,

Yes, the other side of the moon MIGHT be made of green cheese, and aliens may have set up secret bases there, in preparation for their invasion of Earth, in secret cooperation with Big Tech.

Possibility doesn't mean actuality. OK, more simpler, what is maybe possible isn't necessarily what is actually happening. But it's fun to speculate :)

Joe

Bazz, they've built a tunnel that goes from a hacienda, under the wall and into a sewer on the American side. Then emerge late at night here there and everywhere. Others fly over the wall in hot air balloons. Some go via taxi as alleged day-trippers going shopping/visiting rallies etc.

I mean you cannot imagine he many have made it across under and over and continued to do so until Gorbocov at Regan's urging, tore down that wall! I mean it stopped a few and some were murdered by alleged border security as they attempted to flee from communist regimes!

We once welcomed asylum seekers with open arms! What has changed? Communism, despotic rulers, mass-murdering regimes!? Still around buddy and lots of them south of the US border! Go spend a couple of years there then see if you also are not part of that caravan?
Alan B.