Originally Posted by
iAMreallyBORED
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You generally do not get US entry stamps in your passport, although it really depends on the customs & immigration officer processing your passport at your port of entry... or if you request an entry stamp.
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Seems to me like it may depend on the airport, too. At IAD they always stamp mine and they always use the new oval-shaped red-and-blue stamp. At PHL and JFK they used the square red stamp, although the most recent time through either for me was in 2004. But in CLT, they never stamp my passport. Fine by me, really; why would I need or want a US stamp?