US Customs can impound your laptop
Journalists taking their gadgets to the US - laptops, camera or mobile phones - should be aware that Customs and Homeland Security can "search, copy data from and and confiscate your laptop without prior cause" following a court ruling in April. This appears to extend to digital camera memory cards, mobile phone SIM cards and any other gadget you can think of that can store data. Don't expect to see any of these ever again if confiscated. Consider taking making back-ups and taking other precautions before you go to the US with any of your kit.