I don't have a problem with revising how people who come to the US achieve citizenship, but the president does not have the power to just stop this out of thin air. I have citizenship in another country due to marriage and it was a lengthy process, involving language proficiency and a whole lot of work on my part - and money. If we need to strengthen our process, fine, but that should be handled by the LEGISLATIVE branch and designed properly with plenty of input from all sides and expert, not by executive order.