My understanding of current law is that border agents have the right to demand a cavity search. So searching your phone would be within bounds as well.

Again, this is for aliens and not citizens. I see no reason for them to expect additional constitutional rights external to the US.

The alternative for aliens is not to come. They can vote with their feet.

CBP claims the authority to search everybody.

https://www.cbp.gov/sites/default/files/documents/inspection...

It's also unclear to me why you're so carefully distinguishing between "aliens" and "citizens" in this matter, since most constitutional rights are irrespective of citizenship.

I meant aliens seeking entry.

Which constitutional right are you claiming applies differently to citizens than to non-citizens at the border?

All constitutional rights as aliens seeking entry have none. Whether citizens, permanent residents, or legal immigrants who have previously been here have any is a separate question.

I'm specifically saying I see no reason that an alien has any constitutional rights just because they showed up at your doorstep. That starts after they're allowed to enter.

I think you'll find that US citizens don't have a functioning fourth amendment right at the border either. So there's no point distinguishing, unless you really like saying "aliens".

If you more read carefully you'll see I never suggested that they do. I'm saying that a alien with no existing legal status in the US has no legal rights under US law nor do they have any constitutional protections until they're admitted.

Claiming they have fourth amendment protections from a search at the border by customs is non sense. They don't have any of those protections.

The sad reality is that citizens don't have most of those either.

Yes, I've read your remarks, and the ones you responded to. I don't think anyone made that particular claim.