I just want to mention that Trump says he can end birthright citizenship with an executive order, even though it's actually enshrined in the Constitution's XIV Amendment. If he could do that, then he could end citizenship for black people or for anyone else his corrupt little heart should so desire to disenfranchise with the stroke of a pen.
Trump also says we're the only country that offers birthright citizenship and "it's ridiculous." That's false. Many countries offer birthright citizenship.
Some people say it isn't a lie if he doesn't really know. I would say it's a lie because he's willing to say it without knowing or caring in the least about whether it's true. He's the damn president. He should know about the Constitution, and he should not be making pronouncements that are false and ridiculous on their face.