Originally posted by arion:
As a US citizen can you get a US Immigration stamp upon request while entering the country? I just spent the weekend in Victoria, BC and took a ferry (not a plane, sorry :-( back to the US. We cleared immigration at Sidney, BC. If I asked... would US Immigration stamp my poor, empty passport? 
Yes. You have to ask "Will you stamp my passport?" and they usually do. I used to, until I had to continually get refill pages.