Originally Posted by
cbn42
There are reports of CBP officers assuming that people born in the US must be citizens. You cited one yourself a few posts earlier in this thread.
Just goes to show that the CBP isn't infallible. Keep in mind that these are the same characters who sometimes assume a US passport isn't prima facie evidence of US citizenship (and/or nationality) of the person whose picture is in the valid US passport.
Still, the U.S. doesn't assume that everyone with a foreign passport listing a US place of birth is a US citizen. To that purpose, the US has invested resources to make sure that many such persons are not to be treated by it as US citizens.