If you travel to certain state department locations, you can get a next-day passport easily (and I’ve heard of people getting same day). I got one in 4 days and the employees there acted like that was on the long side of the spectrum of people who appeared in person.
I’d recommend planning ahead instead, but in my case I couldn’t give up my soon-to-expire passport as I was traveling and didn’t expect another international trip so soon after expiration (to use the alternate means of proving citizenship and identity rather than returning the old passport book).
I’d recommend planning ahead instead, but in my case I couldn’t give up my soon-to-expire passport as I was traveling and didn’t expect another international trip so soon after expiration (to use the alternate means of proving citizenship and identity rather than returning the old passport book).