Re: I can understand a little bit of bias
There should be no discrimination as such between "natural born" US citizens and naturalized citizens however recent. A citizen is a citizen. If that is a requirement for hire, as often is the case where defense or national security is involved it should be enough at the first pass. If the applicant is seeking a position that requres a security clearance, any relevant questions about when an applicant became a citizen, or how, can be answered connection with necessary background investigation.