@chris_spackman It's in the text of the EO (which I read carefully when it came out). The 14th Amendment applies to people born in the US and "subject to the jurisdiction thereof". Historically that's been read to exclude groups like diplomats, who are an obvious case, being more or less completely immune from the host country's jurisdiction. The EO argues that the named categories of people are not completely "subject to the jurisdiction" of the US, because the countries of their nationality still govern many aspects of their lives. So it comes down to a question of interpretation of that phrase - just because the executive branch says the amendment means X doesn't make it so, and I think that's part of what the courts are being asked to rule on.