I just returned from BKK to US and entered thru Seattle.
After telling them I visited Payatta my hand carry and luggage was thoroughly checked looking for pirated CD's or at least any with Porn. They told me they were after underage porn.
After seeing innocent magazine like Spice or a gay hotel brochure my computer was thoroughly checked and all of my saved pictures were reviewed. My camera was dilligently inspected and luggage reinspected looking for flash card or photo memory cards. They found nothing as none existed. Twenty Questions became Two Hundred and Twenty wanting to know where I stayed in Thailand etc etc and then questions about my work and many others that should have been none of their business. Notes were being taken and this took more time. All of this in a secure area.
Very distressing hour or more while computer was searched. After a long flight this is not a happy way to enter your country.
My advice, before leaving go thru your suitcase assuming they will be and purge anything you don't want to share with the Feds.