So I submitted my application at a post office today. The postal clerk said it could be an issue that the signatures on my naturalization certificate and my drivers license are not identical. Basically, years ago the signature I used on my drivers ID was a bit more elaborate where I had my initials separate from my last name, but on my passport application and my naturalization certificate I have everything running into one scrawl (and this is the signature I've used in the last few years). And the other thing I realized in retrospect is that my height is different by an inch in the drivers license and the naturalization certificate (I am between 5'7" and 5'8" - in one document I stated one height, and in the other document, the other). I'm keeping fingers crossed that this won't be an issue. After all, I've used the same drivers license throughout the entire naturalization process, and no one ever raised any issues. Has anyone faced any hassles applying for a passport due to these reasons, and if yes, how did you address them? Thanks!